Mensuration Practice Test 5

Question : 36 of 40

Marks: +1, -0

If the perimeter and diagonal of a rectangle are 12 cm and 5 cm respectively. Find its area.

Solution:

Area of a rectangle =

(\perimeter)^2/8-(\diagonal)/2

(12)^2/8-(5)^2/2

{144}/8 - {25}/2

{144-100}/8

{44}/8

= 5.5 sq. cm

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