ncert solutions class-viii maths chapter- … · ncert solutions class-viii maths...
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Exercise 11.1
1. A rectangle and a square field with given measurements have the same perimeter are given below in the figure. Which of
the following has larger area?
80m 100m
Solution:
Perimeter of square = 4 x side of square
= 4 X 80
= 320 m
Perimeter of rectangle = 2 x (length + breadth)
= 2 x (100 + breadth)
= 200 + (2 x breadth)
But perimeter of both the fields is same
Therefore,
320 = 200 + (2 x breadth)
120 = 2 x breadth
Breadth = 60 m
Area of square = ( side )2
= (80m)2
= 6400 m2
Area of rectangle = Length x breadth
= (100 X 60) m2
= 6000 m2
Therefore, Area of square is larger compared to area of rectangle.
2. Mrs. Sharma has a square plot with measurements as given in the figure. She wants to build house at the center of the_,_. __ ,,.1 ___ ,,.1 ________ ...., +t.. .... £. .............. �; .... ,,.J .i.. .... ................. z ...1 .......... 1 ..... -: ........ +t.. .... ---.J-- -· .i.. .... ---· .... z �- �I'll --- ............ 2
NCERT SOLUTIONS CLASS-VIII MATHS
CHAPTER-11 MENSURATION
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