What is the area of a triangular roof whose shorter lengths are 20 feet and 30 feet, when the angle between these lengths is 35º? round your answer to the nearest tenth of a square foot.

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

a

explanation: