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Asked: 2021-03-23T09:45:54+00:00 In:

Find the area of the equilateral ABCD. Here, AC = 22 cm, BM = 3 cm, DN = 3 cm and BM⊥ AC, DN ⊥AC.

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Find the area of the equilateral ABCD. Here, AC = 22 cm, BM = 3 cm, DN = 3 cm and BM⊥ AC, DN ⊥AC.

NCERT Solutions for Class 7 Mathematics Chapter 11
Important NCERT Questions
Class vii Math Chapter 11 Perimeter and Area Exercise 11.4
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 11

2020-2021cbsechapter 11class7mathematicsncertperimeter and area
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      Here, AC = 22 cm, BM = 3 cm, DN = 3 cm
      Area of quadrilateral ABCDF = Area of ∆ABC + Area of ∆ADC
      = 1/2 x AC x BM + 1/2 x AC x DN
      = 1/2 x 22 x 3 + 1/2 x 22 x 3
      = 3 x 11 + 3 x 11
      = 33 + 33
      = 66 cm²
      Thus, the area of quadrilateral ABCD is cm².

      Class 7 Maths Chapter 11 Exercise 11.4

      for more answers vist to:
      https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-11/

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