Question

What is the area of a sector with a central angle of 3π5 radians and a diameter of 21.2 cm?

Answer 1

Answer: 105.84 I just took the test!

Step-by-step explanation:

Answer 2

We know that

Area of a circumference=π*r²
for diameter=21.2 cm---------> r=10.6 cm
A=π*10.6²--------> A=π*112.36 -------> A=352.81 cm²

if 2π radians (full circumference) has an area of -----------------> 352.81 cm²
 3π/5 radians-------------------------------------> X
X=[(3π/5)*(352.81)]/2π---------> X=105.84 cm²

the answer is 105.84 cm²