Mensurationhard · Past Paper
The sum of the length, breadth, and height of a cuboid is 19 cm and the length of its diagonal is 11 cm. Find its total surface area.
A240 sq. cm
B361 sq. cm
C121 sq. cm
D482 sq. cm
✓ Correct Answer: A — 240 sq. cm
(l+b+h)² = l²+b²+h² + 2(lb+bh+hl). 19² = 11² + TSA. 361 = 121 + TSA. TSA = 240 sq. cm.
Share this question
More from Mensuration
- Water flows out of a pipe of cross-section 4 cm² at a speed of 10 cm/s. How many liters of water will flow out in 1 minute?
- A conical tent is 9 m high and the radius of its base is 12 m. What is the cost of rice required to fill the tent if 1 m³ rice costs Rs 100?
- Find the volume of the largest right circular cone that can be cut out of a cube whose edge is 9 cm.
- The lateral surface area of a right circular cylinder is 176 sq. cm and its base radius is 4 cm. Find its height.
- Find the total surface area of the prism described in the previous question (base sides 3, 4, 5 and height 10).