Jean's bedroom is 10 feet by 12 feet. She has chosen a carpet which costs $31.35 per square yard. This includes installation
Determine her cost to carpet her room.
PLEASE NO LINKS, thanks

416.67$

Step-by-step explanation:

First, the units of the price are using square yards. To simplify early, we can convert the sides to yards.

Bedroom dimensions: 10/3 yards by 4 yards.

Since the cost is by area unit, we can find the area by multiplying the dimensions(assuming the bedroom is a square), yielding us 40/3 square yards.

Now multiplying the square yards by the price gets us:

416.67$

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6