Question

a cube has edge length 11 inches. write an expression for it's volume and an expression for it's surface area

Answer 1

$Volume: \: {11}^{3} = 1331 \\ Surface \: area: \: {11}^{2} \times 6 = 726$

Answer 2

The volume and the surface area of the cube will be 121 in³ and 726in² respectively

Required expressions for volume and surface area are 11³ and 6(11)²

The formula for calculating the volume of a cube is expressed as:

A = L³ where:

• L is the side length of the cube

GIven that L = 11inches

Volume of the cube = 11³

Volume of the cube = 121 in³

Get the surface area:

The surface area of the cube is expressed as:

S = 6L²

Substitute L = 11 into the formula

S = 6(11)²

S = 6(121)

S = 726in²

Hence the volume and the surface area of the cube will be 121 in³ and 726in² respectively

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