Question

The sides of a rectangle and are

in the ratio 4.5 and its perimeter is 90 cm. Find the dimensions of the rectangle and its area.​

Answer 1

Answer:

let the sides be 4x and 5x

perimeter of the rectangle is given = 90cm

perimeter = 2( L+ B)

90=2(4x+ 5x )

90/2 = 9x

45 = 9x

45/9 =x

5 = x

4x = 4 × 5 =20cm

5x = 5 ×5= 25 cm

area of the rectangle = L× B

= 20 × 25

=500cm^2is the area of the rectangle.

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