Question

A cylindrical well is 20 meters deep and has a diameter of 1.5 meters. Approximately how many cubic meters of soil were dug out to make the well? (Use π = 3.14.)

Answer 1

first find the radius

Answer 2

so is that half of 1.5?

Answer 3

yup! that gives us 0.75

Answer 4

then we use the formula

v = (pi)(r^2)(h)

where r = 0.75 and h = 20

Answer 5

ah ok

Answer 6

and pi = 3.14

Answer 7

so then u multiply all of it?

Answer 8

yeah

Answer 9

i got 47.1

Answer 10

i think its wrong

Answer 11

nope, try again

Answer 12

v = (3.14)*(20)*(.75)^2 = ?

Answer 13

Oh i think i did something wrong

Answer 14

agh idk what im doing wrong

Answer 15

just multiply from left to right

Answer 16

(3.14)*20 = ?

Answer 17

62.8

Answer 18

good, now multiply that by (0.75)*(0.75)

Answer 19

35.33

Answer 20

OH I GOT IT

Answer 21

good, thats your final answer ~

Answer 22

thanks ur simply amazing