Mensurationmedium · Past Paper
Area of a rectangle is 60 sq. cm and its diagonal is 13 cm. Find its perimeter.
A34 cm
B17 cm
C26 cm
D30 cm
✓ Correct Answer: A — 34 cm
L^2 + B^2 = 169 and LB = 60. (L+B)^2 = L^2+B^2+2LB = 169+120 = 289. L+B = 17. Perimeter = 2*17 = 34.
Share this question
More from Mensuration
- The area of the base of a solid hemisphere is 38.5 cm². Find its TSA.
- Area of a sector is 1/4th the area of the circle. The central angle is:
- The ratio of the total surface area to the curved surface area of a cylinder is 3:2. If the total surface area is 462 sq. cm, find its volume.
- The base of a right pyramid is a square of side 10 cm. If its volume is 400 cubic cm, find its total surface area.
- Find the lateral surface area of a cuboid of length 5 cm, breadth 3 cm, and height 2 cm.