5. Area of a rectangle is 360 cm? which is 90%
area of a square. Find Perimeter of square.
(a) 70 cm?
(b) 75 cm
(C) 80 cm
(d) 85 cm?
(e) None of these
Answers
Answered by
1
Answer:
80 cm is the answer....
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Answered by
0
Let the side of square be x.
Given,
=> 90% of x² = 360 cm²
=> 90/100 × x² = 360
=> 90x² = 360×100
=> x² = 400
=> x = 20 cm
Now,
Perimeter = 4× side
= 4× 20
= 80 cm
ANS ---> (C) 80cm
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