Mathematics for IGCSE & O level - Mensuration (Section 3 - No. 42)
A fish tank is 80 cm long, 50 cm wide and 60 cm high. It does not have a lid. Calculate the surface area of the glass used to make the fish tank.
22,800 cm²
22,400 cm²
22,200 cm²
21,600 cm²
Explanation
Surface Area of tank with no lid = (length * width) + 2 * (length * height) + 2 * (width * height) = (80*50) + 2(80*60) + 2(50*60) = 4000 + 9600 + 6000 = 19600 cm².
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