Question

You are putting a rectangular hot tub on your back porch. It is 6 feet long, 5 feet wide, and 3 feet deep. How much will it cost to fill the hot tub if water costs $5 per 1000 gallons?

Answer 1

`Cost=\$3.66234\approx \$3.67`

Explanation:

`Height\ of\ tub=3\ feet\\\\Length\ of\ tub=6\ feet\\\\width\ of\ tub=5\ feet\\\\Volume=Length* Width* Height\\\\Volume=6* 5* 3=90\ feet^3`

`1\ feet^3=7.48052\ gallons\\\\90\ feet^3=90* 7.48052=673.2468\ gallons`

`cost\ of\ 1000\ gallons=\$5\\\\cost\ of\ 1\ gallons=\$ (5)/(1000)\\\\cost\ of\ 673.2468\ gallons=\$ (5)/(1000)* 673.2468=\$3.366234`