A gymnasium is 45 ft long, 30 ft wide, and 14 ft high. The school is painting only the
four walls of the gym. Find the area of the painted parts of the gym. (Lateral)

5400 ft

Step-by-step explanation:

30x45x4=5400

Because 45 by 30 by 14 is the whole volume of the gym, 45 by 30 will only be needed.  45x30= one wall therefore, 45x30x4= four walls of the gym.

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm