Question

The curved part of this figure is a semicircle.

What is the best approximation for the area of this figure?

24+18.25π units²
24+9.125π units²
12+9.125π units²
12+18.25π units²

https://static.k12.com/nextgen_media/assets/8118047-NG_GMT_DP024_46_006.jpg

Answer 1

Ok we can split this into a triangle and a circle, do you know the area of a circle? (equation)

Answer 2

no sir, i came here hoping someone would know..

Answer 3

Usually these are included somewhere in classnotes, it should be expected that you know if they ask you

Anyway, the area is \(A=\pi r^2\)

We can solve this through 2 ways

We can find the hypotenuse of the triangle formed or we could use the distance formula


Which way do you feel easier to you?

Answer 4

the triangle one?

Answer 5

You are really lost

Do any of these equations look familiar to you?
\(a^2+b^2=c^2\)
\(\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)

Answer 6

no sir...

Answer 7

Okay do you have any class notes?