Question

What is the total surface area of a right rectangular prism with a base of 2 cm by 3 cm and a height of 6 cm? A) 13 cm2. B) 72 cm2. C) 113 cm2. D) 226 cm2.

Answer 1

(L · W · 2) + (perimeter of the base · height). For this prism, that's (2 cm · 3 cm · 2) + (2 cm + 2 cm + 3 cm + 3 cm) · 6 cm. This is (12 cm2) + (10 cm · 6 cm) = 72 cm2.

Answer 2

Answer:
`=72\ cm^2`,

Explanation:

The total surface area of a right rectangular prism is given by :-

`\text{Total surface area}=2(lw+wh+hl)`, where h is height, w is width and l is length of the prism.

Given: Height = 6 cm

Dimensions of base = 2 cm by 3 cm

Now, the total surface area of a given right rectangular prism is given by :-

`\text{Total surface area}=2(2\cdot+3\cdot6+2\cdot6)=2(6+18+12)=2(36)=72\ cm^2`,