A painter needs to cover a triangular region with sides of 1

A painter needs to cover a triangular region with sides of 13.6 feet and 14.3 feet. The angle between these two sides is 120 degrees. What is the surface area?

Solution

area covered =(1/2)*length of one side*length of otherside* sin(angle between the sides)

A=(1/2)a*b*sin(A)

sides of 13.6 feet and 14.3 feet. The angle between these two sides is 120 degrees

area A=(1/2)*13.6*14.3*sin(120⁰)

area A=(1/2)*13.6*14.3*(3 /2)

area A=84.2 square feet

area covered =84.2 square feet