A square pyramid has a base of side 14 cm. If the slant height from the apex to the center of one of the base edges is 17 cm, find the vertical height of the pyramid.
Show answer & explanation
Correct answer: D
Explanation
a = 14 cm, l = 17 cm
According to the formula:
h = √(l² − (a/2)²)
h = √(17² − 7²)
= √(289 − 49)
= √240
= 4√15
= 15.49 cm