Mensurationmedium · Past Paper
If the length of the diagonal of a cube is sqrt(3) * 10 cm, what is its total surface area?
A300 cm²
B600 cm²
C100 cm²
D400 cm²
✓ Correct Answer: B — 600 cm²
Diagonal of cube = sqrt(3)l. So l = 10 cm. TSA = 6l² = 6 * 100 = 600 cm².
Share this question
More from Mensuration
- The volume of a cube is numerically equal to its surface area. What is the length of its side?
- A metal sphere of radius 6 cm is melted into 27 small spheres. Find the radius of each small sphere.
- What is the volume of a right circular cylinder if its circumference of base is 44 cm and height is 10 cm?
- The perimeter of a square is 20 cm. Find its area.
- If the area of the base of a prism is 25 cm² and its height is 12 cm, what is its volume?