Question

Can someone help me? WILL MEDAL AND FAN

Answer 1

I need someone to explain to me how to do these

Answer 2

I can help with 1's perimeter the perimeter is 18

Answer 3

And I think the area on 1 is 69

Answer 4

Do you know how I can use pi for it?

Answer 5

i THINK (not sure) you replace the 3 with pi

Answer 6

all three 3's

Answer 7

I thought that too tbh. But I don't want to be wrong. :c

Answer 8

yeah i think thats right hope we're right :)
and you don't have to medal

Answer 9

You deserve it even though we might not be right. :~)

Answer 10

thanks

Answer 11

@zpupster can you help?

Answer 12

You have to find the area of each piece and then add it all up to find the total area.

Answer 13

So for #! we would find the area of the square and add the area of the triangle.

Answer 14

Area of square
4x4=16
Area of a triangle:
1/2x3x4
1/2x12
6
So add them up
16+6=22
So 22 is the composite area.

Answer 15

Okay I understand that part now. But what confuses me is the pi part. How do I use that for the problem?

Answer 16

Or does pi not even matter?

Answer 17

Area of a half circle
½ x pi x r^2

Answer 18

So for #3

Answer 19

Ohhhh okay I get it

Answer 20

Area of a half circle
½ x pi x r^2
½ x pi x 3^2 + ½ x pi x 3^2 + 6 x 4
2( ½ x pi x 3^2) +6 x 4
pi x 9 +24
9pi +24
So 9pi +24 is the area…

Answer 21

And the circumference for a half circle is 1/2 x 2 x r

Answer 22

So do you get it?

Answer 23

Yes I do, thank you so much!

Answer 24

no prob. :)

Answer 25

@TheSmartOne Okay so the square would be 9 and the triangle would be 10 so I would just add them together to get 19??

Answer 26

What question and yes..

Answer 27

Question 1

Answer 28

Well in #1 you have to find the length and base...
It is a 3, 4, 5 triangle so the base is 4 and the height is 3
And the area of a triangle is 1/2 x base x height

Answer 29

okay