Question

help please how do i solve for this ? find the area?

Answer 1

What have you tried to far?

Answer 2

Ok let's break these shapes up.

Answer 3

Idk how to do this thats why I'm asking for some one to teach me how

Answer 4

Do you know how to find the area of a rectangle?

Do you know how to find the area of a circle?

Answer 5

Do you or do you not?

Answer 6

yea A=wl

Answer 7

so um w=16=l=32

Answer 8

im not good at it as in the process but ik thats the formula

Answer 9

Ok well the length isn't 32, it's something else. :P

Check again.

Answer 10

a=wl=16*32=512

Answer 11

So wl is the same as w*l so we will multiply the two values given as they are the width and length. Then you will have the area of the rectangle before it was cutout.

Answer 12

It's not 32, it's 37.

Answer 13

the site is lagging atm so my replies might be out of order.

Answer 14

But anyway, for the area of rectnagle do: 16 * 37 = ?

Answer 15

oh so that is592

Answer 16

Now we need to find out what the area is AFTER it is cutout. These two semicircles are the same so when you put the areas together it's just the area of a full circle.

Answer 17

After we find the area of the circle we will subtract that from the area of the rectangle and we will have the area when it is cutout.

Answer 18

592

Answer 19

Yeah. :)

Answer 20

So now we need to use \[A = r^2\pi\] on one semicircle and it's the area of the full circle.

Now we need to radius for this. Do you know how we are going to get the radius?

Answer 21

how do i do that

Answer 22

No, the radius. The radius of the circle is just half of the diameter.

Answer 23

Ok so the diameter is 16. We need the radius which is half the diameter.

16/2 = radius

They tell use to use 3.14 for pi and don't round so our new equation is:

\[A = \frac{16}{2}(3.14)\]

Answer 24

Do you think you can do that?

Answer 25

no i don't

Answer 26

rectangles don't have a radius

Answer 27

wouldn't i plug in 3.14 as it says in the question

Answer 28

a=25.12

Answer 29

Ok so let's start with 16/2 which is our radius.

What is 16/2?

Answer 30

We're talking about the semi-circle.

Answer 31

a=25.12 right?

Answer 32

Ok I don't think that other post went through. In one post I put the equation:

\[A = \frac{16}{2}(3.14)\]

Answer 33

I'm sorry this is too much, the site is lagging so hard right now. o_O

Answer 34

Yes! Nice. =)

Now make sure you put cm!

Answer 35

Sorry for the trouble, posts are lagging out of order and it's difficult. xD

Answer 36

16/2 is 8