Question
If the two adjacent sides of a rectangle are x cm and x
– 10 cm and its perimeter is 76 cm then find its area?Solution
Let the length and breadth of rectangle = x and x – 10 cm Perimeter of rectangle = 2 x [Length + Breadth] According to the question Perimeter of rectangle = 76 cm ⇒ 2 x [Length + Breadth] = 76 ⇒ x + x – 10 = 38 ⇒ Length = x = 24 cm Breadth = (x – 10) = 14 cm Area of rectangle = Length x Breadth Area of rectangle = 24 x 14 Area of rectangle = 336 cm²
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