Question

the measure of two adjacent sides of a rectangle are in the ratio of 11 :10 .if the perimeter of the rectangle is 84 cm ,find its area।

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Answer 1

Answer:

440 cm²

Step-by-step explanation:

Let the ratio be 11x:10x.

Perimeter of rectangle = 2(l+b)

Given Perimeter = 84 cm

=> 2(11x+10x) = 84

=> 21x = 84/2

=> 21x = 42

=> x = 2

Hence, the dimensions of rectangle are 22 cm and 20 cm.

Area = l×b = (22×20) cm² = 440 cm²