Question

Maria put trim around a banner that is the shape of a triangle. Each side is 21 inches long. Maria has 3 4 foot of trim left. What was the length of the trim when she started? Enter your answer in yards.

Answer 1

We have been given that Maria put trim around a banner that is the shape of a triangle. Each side is 21 inches long.

The amount of trim will be equal to perimeter of triangle. The perimeter of given triangle will be 3 times each side length that is
`3* 21=63` inches.

Now we need to convert 63 inches into feet.

12 inches = 1 feet

63 inches =
`(63)/(12)` feet = 5.25 feet.

We are also told that Maria has
`(3)/(4)` foot of trim left, so total length of trim would be trim used plus trim left that is
`5.25+(3)/(4)=5.25+0.75=6` feet.

Since we need to find length of trim in yards, so we will convert 6 feet into yards.

3 feet = 1 yard

6 feet =
`(6)/(3)` yards = 2 yards

Therefore, the length of the trim was 2 yards.