Question

A rectangular prism has a surface area of 400 cm 2. If it is 10 cm long and 10 cm wide, what is its height? 4 cm 5 cm 8 cm 40 cm

Answer 1

2((10)(10) + 10h + 10h) = 400

100 + 20h = 200

20h = 100

h = 5 cm