HOTS Mathematics Primary 5 Volume of Liquid

A rectangular tank is 40 cm long, 25 cm wide, and 30 cm high. It contains water to a height of 20 cm. Ravi drops a stone into the tank. The water level rises to 22 cm. What is the volume of the stone?

A 2 000 cm³
B 22 000 cm³
C 20 000 cm³
D 1 000 cm³
Show Worked Solution

Worked Solution

Step 1: Find the rise in water level caused by the stone. 22 − 20 = 2 cm Step 2: Find the base area of the tank. 40 × 25 = 1 000 cm² Step 3: Volume of stone = base area × rise. 1 000 × 2 = 2 000 cm³

Correct answer: 2 000 cm³

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