Question

The figure below shows a circular prop with two triangles labeled ABC and AOC made on it. The center of the prop is labeled O.
What is the area of the cloth required to make the circular prop?
A.) 23.60 ft2
B.) 17.83 ft2
C.) 39.27 ft2
D.) 29.63 ft2

Answer 1

@Callisto

Answer 2

which area ?

Answer 3

What do u mean?

Answer 4

ok which one is the space u want ?

Answer 5

because it's a cycle the o angle is 90 degree . and u can use 2ao^2=5^2

Answer 6

angle AOC = 2(45) = 90 (angle at centre, twice angle at circumference)
AD = 1/2 (5) = 2.5
angle AOD = 1/2 (90) = 45
AO(radius) = 2.5/(cos45)
Then, use the formula, area = pi (r^2) to find the area :)
Sorry I was talking to my friend on phone for something important :(

Answer 7

Wait, AO(radius) = 2.5/(sin45) not cos45, my bad :(

Answer 8

its ok

Answer 9

Do you understand it?