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PSLE Mathematics

Question post on Sat, 25/05/2019 12:16pm

The total surface area of the cube is 54cm2.Find the volume of the cube.

alfretztay · Answer 1 · Post on Sun, 26/05/2019 8:45am

alfretztay Post on Sun, 26/05/2019 8:45am

54/6 = 9 (area of each face of the cube)
9 = 3 x 3 ( the length of each side is 3 cm)
3 x 3 x 3 = 27

Ans : 27 cm^3.

BigDevil · Answer 2 · Post on Sat, 25/05/2019 1:32pm

A cube has 6 sides.

Area of each side -> 54 ÷ 6 = 9 cm²

Length of each side -> √9 = 3 cm

Volume of the cube -> 3 × 3 × 3 = 27 cm³