Day 1 HW
Surface Area of Prisms
Name: _______________________________
Directions: Please answer each question below. Show ALL work!
8
20
8
10
10
Base = Regular Polygon
Name of Prism: ______________________
Name of Prism: ______________________
LSA: _______________________________
LSA: _______________________________
TSA: ________________________________
TSA: _______________________________
Bruno Mars was tired of hearing “Turn the music down!” every evening, so he decided to
sound proof his room so that he could listen to his music in peace. Soundproofing
material is sold in flat sheets that can be attached to the walls. Bruno Mars plans on
soundproofing the floor and ceiling too, just to be safe! Suppose his bedroom is 10 feet by
12 feet and has a ceiling that is 8 feet from the floor. How many square feet of
soundproofing material would he need to soundproof it?
A company is deciding which box to use for their merchandise. The first box measures 8
inches by 6.25 inches by 10.5 inches. The second box measures 9 inches by 5.5 inches by
11.75 inches.
a) Which box requires more material to make?
b) If each box uses material that costs $0.03 per square inch to make, how much does a
company save by choosing to make fifty boxes of the smaller box in comparison to
fifty boxes of the larger box?