Question

Zoe bakes a cake in the shape of a triangular pyramid. The base of the cake has an area of 10 square inches and she makes the cake 9 inches tall. If the ingredients cost $0.75 per cubic inch, how much will it cost Zoe?

Answer 1

@nathanruff

Answer 2

@ajprincess

Answer 3

would it be 30 in^3?

Answer 4

\[V=\frac{1}{3}Bh\] Where B is the area of the base and h is the height, so
\[V=\frac{1}{3}(10)(9)\] The volume ends up being 30 inches cubed. Now, multiply that by the $0.75, since the cost of ingredients is also in inches cubed.

Answer 5

30*0.75?

Answer 6

22.50

Answer 7

?

Answer 8

Yep. The cake would cost $22.50.

Answer 9

thank you. ive one more question.

Answer 10

i will post it shortly.

Answer 11

mind if i tag you?

Answer 12

Go ahead.

Answer 13

thanks. one second.