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The perimeter of a rectangle having area equal to 144cm and sides in the ratio 4:9 is.

A52cm

B56cm

C60cm

D64cm

Answer:

A. 52cm

Read Explanation:

Let 1 = 4x and b = 9x Area of rectangle = 1 x b 144 = 4x * 9x x² = 144/36 = 4 Perimeter of rectangle = 2 (1+b) = 2 (8 + 18) = 2 x 26 = 52cm


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