The length and breadth of a rectangle are in the ratio 8:3. Find Its area if perimeter is 132 cm.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 864 cm2
Let the length and breadth of the rectangle be 8x and 3x respectively.
Perimeter of rectangle = 2(l + b)
A/c to ques.
⇒ 2(l + b) = 132
⇒ 2(8x + 3x) = 132
⇒ 2 × 11x = 132
⇒ x = 132/22 = 6
Length and breadth are 8 × 6 = 48cm and 3 × 6 = 18cm
Area of Rectangle = Length × Breadth
⇒ 48 × 18 = 864 cm2.