Question

what are the actual base and height of the trampoline? actual base =? ft actual height =? ft a = 1/2bh 1 in.: 4 ft 2.5 in. 3 in.

Explanation:

Step1: Find actual base

The scale is 1 in. : 4 ft. The drawn - base is 3 in. Multiply the drawn - base by the scale factor.
$3\times4 = 12$ ft

Step2: Find actual height

The drawn - height is 2.5 in. Multiply the drawn - height by the scale factor.
$2.5\times4=10$ ft

Answer:

Actual base = 12 ft, Actual height = 10 ft