NCERT Solutions for Class 7 Mathematics Chapter 11
Important NCERT Questions
Class vii Math Chapter 11 Perimeter and Area Exercise 11.3
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 7
Find the perimeter of the adjoining figure, which is a semicircle including its diameter.
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Diameter = 10 cm
∴ Radius = 10/2 = 5 cm
According to question,
Perimeter of figure = Circumference of semi-circle + diameter
= πr + D
= 22/7×5+10 = 110/7+10
= 110+70/7 = 180/7 = 25.71 cm
Thus, the perimeter of the given figure is 25.71 cm.
Class 7 Maths Chapter 11 Exercise 11.3
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https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-11/