Question

The volume of a cone is 141.3 cubic inches. The height of the cone is 15 inches. What is the radius of the cone, rounded to the nearest inch? Use π = 3.14.

2 inches
3 inches
5 inches
9 inches

Answer 1

@mayankdevnani

Answer 2

write the formula of volume of cone first

Answer 3

ok

Answer 4

v=pi*r^2 h/3

Answer 5

now plug in the values

Answer 6

ok

Answer 7

v = 3.14 * 15^2 *3?

Answer 8

nope

Answer 9

?

Answer 10

we have to find radius

Answer 11

ok..

Answer 12

try again

Answer 13

can you help please with that part. i dont know it, i tried

Answer 14

\[\large 141.3=\frac{3.14 \times r^2 \times 15}{3}\]

Answer 15

solve for r

Answer 16

ok

Answer 17

@mayankdevnani

Answer 18

its 3,-3..

Answer 19

@mayankdevnani

Answer 20

good and radius can't be negative
so, 3 is correct

Answer 21

ok awesome! next question

Answer 22

post it

Answer 23

@mayankdevnani

Answer 24

Ugh,use distance formula

Answer 25

which is...

Answer 26

lmao you forget

Answer 27

lol yes i do sorry

Answer 28

lol search it again

Answer 29

what do i search?

Answer 30

distance formula girl

Answer 31

ok

Answer 32

(x1,y1) and (x2,y2)

Answer 33

the problem is i dont know what to put in those..

Answer 34

what are the co ordinates of C and D?

Answer 35

2 and 6?

Answer 36

nope

Answer 37

i mean in terms of x-co ordinate and y-co ordinate

Answer 38

2 and -4?

Answer 39

C(0,2) and D(6,-4)

Answer 40

do you know how did i get it?

Answer 41

oohhhh yes i get it!

Answer 42

now apply distance formula

Answer 43

but i dont know what to do...

Answer 44

can you please write the formula and ill solve it..

Answer 45

\[\large \bf distance=\sqrt{(6-0)^2+(-4-2)^2}\]

Answer 46

thank you!

Answer 47

np

Answer 48

i got 8.4?

Answer 49

option B would be correct

Answer 50

ok next!
What is the length, in units, of the hypotenuse of a right triangle if each of the two legs is 3 units?

Square root of 18 units
Square root of 27 units
3 units
6 units

Answer 51

draw the diagram first

Answer 52

what diagram?

Answer 53

diagram of triangle

Answer 54

i dont know how to do that