Practice mode / Volume and Surface Area How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm? A Option A: 5600 B Option B: 6000 C Option C: 6400 D Option D: 7200 Correct answer C. 6400 Show answer Report a problem How we write and check questions
Question 01 / Volume and Surface Area 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? A Option A: 2 : 1 B Option B: 3 : 2 C Option C: 25 : 18 D Option D: 27 : 20 Correct answer C. 25 : 18 Show answer Open question
Question 02 / Volume and Surface Area What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm? A Option A: 344.35 cm2 B Option B: 462 cm2 C Option C: 498.35 cm2 D Option D: None of these Correct answer C. 498.35 cm2 Show answer Open question
Question 03 / Volume and Surface Area 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: A Option A: 90 cm B Option B: 1 dm C Option C: 1 m D Option D: 1.1 cm Correct answer B. 1 dm Show answer Open question
Question 04 / Volume and Surface Area 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. A Option A: 3 : 7 B Option B: 7 : 3 C Option C: 6 : 7 D Option D: 7 : 6 Correct answer B. 7 : 3 Show answer Open question
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