The length of a rectangle is 10 cm. If its perimeter is 2...
The length of a rectangle is 10 cm. If its perimeter is 28 cm, find the area
30cm2
40cm2
60cm2
80cm2
Correct answer is B
perimeter = 2( length + breadth)
→ 28 = 2 (10+ b)
14 - 10 = b
b = 4
Area = length x breadth
10 x 4 → 40cm2
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