Question

find the perimeter and area of the following composite shape.

Answer 1

do you know how to find area of a semicircle and area of a rectangle?

Answer 2

area of a semicircle: 1/2*pi*r*r
area of rectagngle: 20.2*3.1

Answer 3

yeah i know the rectangle part, but not the semicircle part.

Answer 4

i told you the formula

Answer 5

so what is area of the semicircle?

Answer 6

i dont know the radius..

Answer 7

20.2/2=10.1 is the radius

Answer 8

you know the diameter. radius is half the diameter

Answer 9

okay, well give me a minute. dont leave lol.

Answer 10

ok

Answer 11

i'll help later with perimeter

Answer 12

lets finish with area

Answer 13

do i add both areas of the shapes for the actual area?

Answer 14

yes

Answer 15

so for a semicircle area is 160.1557
for rectangle is 62.62

Answer 16

sso just add

Answer 17

i got 382.9314?

Answer 18

1/2* Pi * (20.2/2)^2 + 20.2*3.1

Answer 19

can you like write it out? it could probably make me understand better.

Answer 20

@perl

Answer 21

correct

Answer 22

wait i was right? @AlexandervonHumboldt2

Answer 23

yeah

Answer 24

are you positive cause its for a test grade?