42.0k views
6 votes
What is the surface area of this figure in square centimeters?

a rectangular prism with dimensions, right triangle base 3 cm by 4 cm, the height of the prism is 7 cm

Answer Choices:
75
60
96
84

What is the surface area of this figure in square centimeters? a rectangular prism-example-1
User Eugene V
by
4.6k points

2 Answers

5 votes
96 is the answer to your question
User Dercz
by
4.3k points
6 votes

Answer:

96cm

Explanation:

front/back triangles: (4 * 3) / 2 = 6cm

bottom rectangle: 4 * 7 = 28cm

side rectangle (left): 3 * 7 = 21cm

slanted rectangle: pythagoras - 3^2 + 4^2 = x^2

9 + 16 = x^2

25 = x^2

square root of 25 = 5

x = 5

7 * 5 = 35cm

6 * 2 + 28 + 21 + 35 = 96cm

User Skyr
by
4.7k points