The area of a rectangle is 900 sq. cm. The length of a rectangle is 3 cm more than thrice the radius of a circle. The circumference of a circle is 88 cm. The breadth of a rectangle is 10 cm more than the side of an Equilateral triangle. Find the perimeter of an Equilateral triangle.

Correct option is D

Let the radius of the circle be r cm
2×22/7×r=88
r = 14
Length of the rectangle = 3 + 3 × 14 = 45 cm
Breadth of the rectangle = 900/45 = 20 cm
Side of the equilateral triangle = 20 - 10 = 10 cm
Required perimeter = 3×10=30 cm