Question

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

Explanation:

Step1: Calculate actual base

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

Step2: Calculate actual height

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

Answer:

Actual base = 12 ft, Actual height = 10 ft