Question

Richard wants to paint the top and sides of the block column. What is the surface area he needs to cover?

Answer 1

The Surface area to be painted = 512 ft²

What is the Surface Area of a Rectangular Prism?

The surface area of a rectangular prism = 2(w × l + h× l + h × w). Where:

w = width of the rectangular prism

h = height of the rectangular prism

l = length of the rectangular prism

The block column has a shape of rectangular prism. Therefore, the surface area that Richard needs to paint which excludes the bottom of the block = 2(w × l + h× l + h × w) - l × w.

• l = 10 ft
• h = 12 ft
• w = 8 ft

Plug in the values

Surface area to be painted = 2(8 × 10 + 12 × 10 + 12 × 8) - 10 × 8

Surface area to be painted = 592 - 80

Surface area to be painted = 512 ft²

Learn more about the surface area of rectangular prism on:

brainly.com/question/1310421

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