Question

still here

Answer 1

@RadEn

Answer 2

11-18 already have answer for 10

Answer 3

11#
area of the green sector = 90/360 * area of circle
given area of circle = 25pi

so, area of the green sector = 90/360 * 25 * 3.14 = 19.625 in^2

Answer 4

it is A

Answer 5

:) !!

Answer 6

12?

Answer 7

just multiply by 4
so 16 * 4 = 64

Answer 8

i assumed the height of both pyramids is same

Answer 9

okay 13 ?

Answer 10

check the previous problem, looks we have done it

Answer 11

i dont know .

Answer 12

http://openstudy.com/study#/updates/5166b30fe4b0902dbc1d8442

Answer 13

you are correct , the answer is D

Answer 14

yup

Answer 15

14 ?

Answer 16

known the diameter of circle = 27

so, the arc length of the blue sector = 120/360 * the circumference of circle
= 120/360 * pi * diameter
= 1/3 * pi * 27
= 9pi

Answer 17

amazing 15 ?