A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
Correct answer C. 25 : 18
Tip: press A, B, C or D to answer, and N for the next question.
Advertisement
More Volume and Surface Area questions
See allWhat is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?
Correct answer C. 498.35 cm2
A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:
Correct answer B. 1 dm
Advertisement
The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.
Correct answer B. 7 : 3
A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
Correct answer B. 5120
Discussion