Select the correct answer.
The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 inches, what is the length?
A.
12 inches
B.
15 inches
C.
21 inches
D. 40 inches
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B

Step-by-step explanation:

42 = 2*x + 2*6

2x=42-12=30

x=15

a. she will receive a refund of $278.

step-by-step explanation:

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.