Question

Heather wants to buy a new refrigerator, but she only has room for one that is 18 ft3 or less. Which set of dimensions represent a refrigerator that Heather can buy?


A)2 ft. wide x 2.5 ft. long x 3 ft. tall
B)2 ft. wide x 2.5 ft. long x 4.5 ft. tall
C)2.5 ft wide x 3 ft. long x 4 ft. tall
Eliminate
D)2.5 ft. wide x 2 ft. long x 4 ft. tall

Answer 1

A)2 ft. x 2.5 ft. x 3 ft. = 15 ft³
B)2 ft.  x 2.5 ft.  x 4.5 ft. = 22.5 ft³
C)2.5 ft  x 3 ft.  x 4 ft. = 30 ft³
D)2.5 ft.  x 2 ft. x 4 ft. = 20 ft³

Since only option A has volume less than 18 ft³, he should buy the refrigerator with dimension A- 2 ft. wide x 2.5 ft. long x 3 ft. tall 

Answer 2

Option a is correct because it is the only option suitable for the above condition. A-2x2.5x3=15 B-2x2,5x4.5=22.5 C-2.5x3x4=30 D-2.5x2x4=20