(c) 90-9x
(d) 9 - X
11. A Square figure is made from 40 cm. wire. What is the area of the square region?
(a) 1600 sq.cm
(b) 100 sq.cm
(c) 16 sq.cm
(d) 160 sq.cm
Answers
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Given : A Square figure is made from 40 cm. wire.
To Find : The area of the square region?
(a) 1600 sq.cm
(b) 100 sq.cm
(c) 16 sq.cm
(d) 160 sq.cm
Solution:
Perimeter of Square = 4a
where a is the side length of square
Area of square = a²
Square figure is made from 40 cm. wire.
=> Perimeter = 40 cm
=> 4a = 40
=> a = 10
Hence side length of the square = 10 cm
Area of square region = 10² = 100 sq cm
Hence , Correct option is b) 100 sq cm
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