Question

If the area of a rectangular region is 560cm2

and one of its sides is 20cm then find its perimeter?

a) 96cm b) 98cm c) 85cm d) 97cm​

Answer 1

Answεr :-

It is given that the Area of the rectangle is 560cm², and the length of one side is 20 cm. Then, other side will be;

$\tt \: Area = l \times b \\ \\ \to \tt \: 560 = l \times 20 \\ \\ \to \tt \: l = \frac{560}{20} \\ \\ \to \tt \: l = 28 \: cm$

Here, length of the rectangle will be 28 cm.

Thus, perimeter will be;

$\tt \: Perimeter = 2(l + b) \\ \\ \to \tt \: Perimeter = 2(28 + 20) \\ \\ \to \tt \: Perimeter = 96 \: cm$

Hence, perimeter will be 96 cm.

So,

Correct Option' :- a) 96 cm