Question

need help with geometry

Answer 1

Shoot the question :)

Answer 2

Oh boy this is complicated so first do you know the area of a circle formula? Or even better what's the area of that circle

Answer 3

the area of a circle in general?

Answer 4

Yeah!

Answer 5

We can work from there

Answer 6

isn't it just the 3.14 thing?

Answer 7

It's Pi(r^2)

Answer 8

So 18^2 times pi

Answer 9

1010.36?

Answer 10

Yeah okay so now we are looking for a section of the area.

Answer 11

A right angle is 90 degrees which is 1/4th of 360 so divide the area by 4

Answer 12

so 90 divded by 4?

Answer 13

No no, the area so 1010.36 by 4

Answer 14

252.56

Answer 15

Okay so that is the area of 1/4th of the circle right!

Answer 16

You need to find the area of 3/4th of the circle and a the triangle . So multiply that number by 3 and all we have left is to add the area of the triangle

Answer 17

757.77

Answer 18

Great! Now what do we have left to add?
Just the area of the triangle right?

Answer 19

Do you know the formula for the area of a triangle?

Answer 20

1/2 *base * hight right?

Answer 21

YES! So what's the base and the height of the triangle?

Answer 22

757.77 and 252.59 ?

Answer 23

No no, so you have 757.77 keep that on the side

Answer 24

The base and height of the triangle are 18 and 18. So 18 times 18 is 324

Answer 25

Divide that by 2 and you get 162, and all you need to do is add that 757.77 and you should have your answer.

Answer 26

so add 162 and 757.77

Answer 27

Yep!

Answer 28

919.77?

Answer 29

Yep

Answer 30

Good Job!

Answer 31

Can I have help with one more?

Answer 32

Uh, sure

Answer 33

So what's the area of the square. S^2 right?
So just 8 times 8 so it's 64

Answer 34

64 Minus pir^2 and the r is 4

Answer 35

So 64-16pi

Answer 36

13.734?

Answer 37

Yeah

Answer 38

So thats the answer then?

Answer 39

Yes......

Answer 40

so rounding to the nearest tenth it would be 13.7?

Answer 41

Mhm haha

Answer 42

okay, thank you!