Question

How many centimeters are in 7 feet, given that 1 inch = 2.5 centimeters?

Answer 1

Your answer is 210cm.

1. 1 in= 2.5 cm
x12 x12
___________
12 in/1ft= 30 cm

*12 inch = 1 foot

2. 1 ft= 30 cm
x7 x7
__________
7ft = 210 cm

1. We know that 1 in = 2.5 cm, so first change 1 inch to 12 in/ 1 foot by multiplying both sides of the equation by 12 to get 12 in/ft= 30 cm

2. Once we have our answer for 1 ft, multiply both sides again by 7 to get 7ft= 210 cm

Answer 2

210 cm

Explanation:

We need to convert 7 ft to cm

We know that 1 ft = 12 inches

7 ft * 12 inches/1 ft = 84 inches

We know that 1 inch = 2.5 cm

( 1 inch is really 2.54 cm but you question says 2.5 cm)

84 inches * 2.5 cm/1 inch = 210 cm