Class 9

Asked: November 5, 2020In: Class 9

The students of a Vidyalaya were asked to participate in a competition for making and decorating penholders in the shape of a cylinder with a base, using cardboard. Each penholder was to be of radius 3 cm and height 10.5 cm. The Vidyalaya was to supply the competitors with cardboard. If there were 35 competitors, how much cardboard was required to be bought for the competition?

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.2 Page No:217 Questions No:11

Bagheera Thakur

Asked: November 5, 2020In: Class 9

Find how much steel was actually used, if 1/12 of the steel actually used was wasted in making the tank.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.2 Page No:217 Questions No: 9 Part:2

Bagheera Thakur

Asked: November 5, 2020In: Class 9

Find the lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.2 Page No:217 Questions No:9 Part-1

Bagheera Thakur

Asked: November 5, 2020In: Class 9

In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter 5 cm. Find the total radiating surface in the system.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.2 Page No:217 Questions No:8

Bagheera Thakur

Asked: November 5, 2020In: Class 9

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find (i) its inner curved surface area, (ii) the cost of plastering this curved surface at the rate of Rs 40 per m2.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.2 Page No:217 Questions No:7

Kavita Kaushik

Asked: November 5, 2020In: Class 9

Find the volume of a sphere whose surface area is 154 cm².

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.8 Page No:236 Questions No:7

Gopinath Munde

Asked: November 5, 2020In: Class 9

If the volume of a right circular cone of height 9 cm is 48 π cm³, find the diameter of its base.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.7 Page No:233 Questions No:4

Gopinath Munde

Asked: November 5, 2020In: Class 9

Find the volume of the right circular cone with

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.7 Page No:233 Questions No:1 (i) radius 6 cm, height 7 cm (ii) ...

Gautam Rode

Asked: November 5, 2020In: Class 9

A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7 cm. If the bowl is filled with soup to a height of 4 cm, how much soup the hospital has to prepare daily to serve 250 patients?

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.6 Page No:230 Questions No:8

Gautam Rode

Asked: November 5, 2020In: Class 9

A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the graphite.

NCERT Solutions for Class 9 Maths Chapter 13 Important NCERT Questions Surface Areas and Volumes NCERT Books for Session 2022-2023 CBSE Board, UP Board and Other state Boards EXERCISE 13.6 Page No:230 Questions No:7

Category: Class 9

Find how much steel was actually used, if 1/12 of the steel actually used was wasted in making the tank.

Find the lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high.

In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter 5 cm. Find the total radiating surface in the system.

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find (i) its inner curved surface area, (ii) the cost of plastering this curved surface at the rate of Rs 40 per m2.

Find the volume of a sphere whose surface area is 154 cm².

If the volume of a right circular cone of height 9 cm is 48 π cm³, find the diameter of its base.

Find the volume of the right circular cone with

A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7 cm. If the bowl is filled with soup to a height of 4 cm, how much soup the hospital has to prepare daily to serve 250 patients?

A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the graphite.

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