Question

If each side of a cube is measured to be 7.203cm, its total surface area to correct significant fig will be

Answer 1

Explanation:

It is given that the side of the cube is 7.203m. Therefore, number of significant figures in length is 4.

Total surface area of cube,

S = 6( area of one face) = 6l2 = 6 (7.203)2

S = (311.29925) m2

By rounding off it to 4 significant figures, we get,

S = 311.3 m2

Volume of the cube, V = l3 = (7.203)3 = 373.714754427 m3

By rounding off it to 4 significant figures, we get,

V = 373.7 m3

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