Answer:
63 ft
Explanation:
Using the concept of similarity and enlargement, 6ft tall man has enlarged shadow of 8ft
The height of cactus shadow is (76+8) ft and using the same scale of enlargement of the man's shadow, we would get the actual height of cactus.
Shadow of cactus is 76+8=84 ft because at the point where the man stands, their shadows end up meeting again yet the point is 76 ft from the cactus.
Using cross multiplication concept
If 8ft is actually 6ft
84 ft is actually x ft
8x=84*6
X=84*6/8=63 ft
Therefore, the cactus is actually 63 ft tall