Question

Calculate the total surface area of this 3-dimensional object with these dimensions:

Height = 3cm
Length = 4cm
Width = 3cm

Answer 1

66 sq cm

Explanation:

To calculate the surface area, we need to find the area of all the sides of the box. But don't worry, there is a formula for this.

2(wl + hl + hw)

we simply substitute these values in and we get

2(12 + 12 + 9)

2(33)

that means that the surface area is 66 sq cm