A triangular prism has a right triangle base with legs of 9 cm and 12 cm. The prism’s height is 15 cm. What is the lateral surface area?
Options
A
540 cm²
B
630 cm²
C
660 cm²
D
720 cm²
Answer & Analysis
Answer
A
Analysis
Question Analysis:
This question involves calculating the lateral surface area using all three sides of the triangle base.
The main focus is understanding how each base side corresponds to a lateral rectangular face.
Key Concept Explanation:
Each triangle side × prism height gives the area of one rectangle.
First, find the hypotenuse using the Pythagorean theorem.
Step-by-Step Solution:
Hypotenuse =
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