The surface area of a triangular prism can be found using the formula: 2(base area) + (perimeter of base) x (height)
First, find the base area:
Base area = (1/2) x base x height
Base area = (1/2) x 4 cm x 6 cm
Base area = 12 cm²
Next, find the perimeter of the base:
Perimeter = 4 cm + 6 cm + 4 cm
Perimeter = 14 cm
Finally, calculate the surface area:
Surface area = 2(12 cm²) + 14 cm x 3 cm
Surface area = 24 cm² + 42 cm²
Surface area = 66 cm²
Therefore, the correct answer is 66 centimeters squared.
What is the surface area of the figure above?
a triangular prisms with a height of 3 cm a length of 4 cm and a width of 6 cm
Georgia Milestones Grade 7 Mathematics Formula Sheet
(1 point)
Responses
78 centimeters squared
92 centimeters squared
84 centimeters squared
66 centimeters squared
1 answer
1 answer