If a 36-foot tree casts a 28-foot shadow at the same time near by building casts a 70-foot shadow, how tall is the building?

Question

Eduardo Lara

Mathematics

11 March, 11:17

If a 36-foot tree casts a 28-foot shadow at the same time near by building casts a 70-foot shadow, how tall is the building?

+1

Answers (2)

Know the Answer?

Madeline Gray · Answer 1

Actual length / shadow ratio is equal

Let the height of the building be x, then

36/28 = x/70

x = (36 x 70) / 28 = 2,520/28 = 90.

Therefore, the height of the building is 90 feet.

Alessandro Odom · Answer 2

Alessandro Odom 11 March, 11:42

0

The building is 78 feet tall.