A. find the perimeter of the triangle.
b. find the area of the triangle.
c. if tile cost $6 per square centimeter, how much will it cost to tile the triangle?

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours