Question

help.

Answer 1

@jim_thompson5910

Answer 2

hint: pythagorean theorem

Answer 3

ok....um

Answer 4

first identify a,b and c

Answer 5

i got 85.79

Answer 6

what's the longest side?

Answer 7

65

Answer 8

so that's c

c = 65

Answer 9

let's make a = 56 and b = x

Answer 10

ok..

Answer 11

a^2 + b^2 = c^2
56^2 + x^2 = 65^2

solve for x

Answer 12

ok

Answer 13

hopefully it makes sense how I set that up?

Answer 14

yes i got it.. let me solve

Answer 15

33!

Answer 16

good

Answer 17

next!

Answer 18

what's the longest side?

Answer 19

25

Answer 20

so c = 25

Answer 21

let's make a = 15 and b = x

Answer 22

ok...

Answer 23

do you know how to set up the equation?

Answer 24

20!!!!

Answer 25

yep 20

Answer 26

ok next!

Answer 27

find the volume of each

------------------------------------
Volume of a Cone
\[\Large V = \frac{1}{3}\pi*r^2*h\]
------------------------------------
Volume of Cylinder
\[\Large V = \pi*r^2*h\]

Answer 28

whats the radius and height of each?

Answer 29

you tell me. It's given in the drawings

Answer 30

oh ok..

Answer 31

2 and 3 for cone, and 2 and 7 for cylinder?

Answer 32

the diameter of the cone is 2, so the radius is _______

Answer 33

oh um how do i figure out the diameter?

Answer 34

they show the diameter

it's the distance from one edge of the circle to the opposite edge

Answer 35

3?

Answer 36

do you see how the diameter is 2?

Answer 37

oohhhh yes!

Answer 38

the radius is just half of the diameter

Answer 39

and so whats the height?

Answer 40

the diameter of the cone is 2, so the radius is _______

Answer 41

ok i get it. :)

Answer 42

4?

Answer 43

take half of 2

Answer 44

radius is smaller

Answer 45

1?

Answer 46

yes, the radius of the cone is 1

Answer 47

the radius of the cylinder is also 1

Answer 48

ok... so for the cone equation, its :

V=1/3 *π ∗1^2∗2?

Answer 49

close, the height of the cone is 3 (not 2)

Answer 50

look again at the drawing

Answer 51

oh ok!

Answer 52

i got 3.14 for the cone equation :)

Answer 53

whats the height for the cylinder?

Answer 54

the drawing shows the height, it's the vertical component of the cylinder

Answer 55

7?

Answer 56

yes

Answer 57

ok and the radius is 2 right?

Answer 58

no that's the diameter, it's the same story as the cone

Answer 59

oh so 1 is the radius?

Answer 60

the radius will start at the center and move to the edge

Answer 61

yes 1 is the radius

Answer 62

ok so this is the equation?

V=π∗1^2∗7?

Answer 63

yes where pi = 3.14

Answer 64

ok i got 21.98

Answer 65

now subtract the volumes

Answer 66

volume of cone = 3.14
volume of cylinder = 21.98

Answer 67

21.98-3.14=18.84!

Answer 68

next!