A square pyramid has a volume of 500 cm³ and a base side length of 10 cm. What is the slant height of the pyramid?
Options
A
10 cm
B
5
cm
C
15 cm
D
13 cm
Answer & Analysis
Answer
B
Analysis
Question Analysis:
This problem asks for the slant height, but only gives volume and base side. We must first calculate the vertical height from the volume, then use the Pythagorean Theorem.
Key Concept Explanation:
Volume of square pyramid: V = 1/3 × base area × height
To find slant height:
Use a right triangle formed by the vertical height and half the base side.
Step-by-Step Solution:
Base area = 10 × 10 = 100
500 = (1/3) × 100 × h → h = 15
Half base = 5
Slant² = 15² + 5² = 225 + 25 = 250
→ Slant =
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