Question

http://tinypic.com/r/2dvqrsl/5
Use the illustration below to calculate the circumference of the circle.

answers:
1.3 cm
4.08 cm
2.04 cm
5.03 cm

Answer 1

I got 5.03 ?

Answer 2

try again. use Pythagoras to find the diameter and then multiply diameter by pi

Answer 3

i did but i got 5.3 ?

Answer 4

a^2 + b^2 = c^2

you used c^2 when you were looking for c :)

Answer 5

r=√(s-x)(s-y)(s-z)) / s where s equals (x+y+z )/2

Answer 6

sorry wrong person

Answer 7

XD

Answer 8

im so confused @Euler271

Answer 9

:D sorry :p

Answer 10

its okay

Answer 11

c would be 1.69 ?

Answer 12

a^2 + b^2 = c^2

the diameter is c. 1.69 is c^2

Answer 13

ohh yeah i got that part lol but i don't know what to do after?

Answer 14

circumference = pi * diameter

Answer 15

sqrt(1.69) = 1.3

Answer 16

ohh i forgot about the square rooting :/ ummm so then it would be 4.08 ??

Answer 17

yes

Answer 18

yay thank you thank you! :)

Answer 19

glad i could help :)