Question

The visible surfaces of the figure shown here are to be covered with a special paint that is only sold in liters. How many liters must be purchased if a liter covers 15 m2?
the units are in meters

Answer 1

Jody, this question is based on surface area, so the surface area of the figure divided by the amount the paint covers Is the answer [sa/Pa=answer].

Answer 2

I see but I dont know how to get the surface area of this combined figure , just guide me through if you have time please and I'll do it myself

Answer 3

To make finding the surface area for this figure easier, think of the figure expanded out to look like a rectangular prism, but using the correct dimensions.

Answer 4

rectangular prism , ok

Answer 5

the correct dimensions are:
L=36
W=26
H=24

Answer 6

I see so by expanding like the width will be 12+14=26 and so on

Answer 7

Use the formula: [L*W+L*H+H*W]*2 to find the surface area

Answer 8

now I will get the SA= 26 x 36 x 24 =22464

Answer 9

oh I see, my bad this is the formula of the rec. prism

Answer 10

I'll correct this

Answer 11

Good. now divide it [SA] by 15 [PA] to get the answer.

Answer 12

that will be 4848 the SA

Answer 13

4848 / 15 = 323.2

Answer 14

Yes, that is the answer.

Answer 15

Wait, we forgot to do something before dividing.

Answer 16

We have to divide 15 by itself, then divide the Surface area by the 15*15

Answer 17

yes

Answer 18

not divide, multiply. that was a finger typo

Answer 19

15*15 = 225

Answer 20

Well, I Gtg, But it will look like im still here. And, Yes, that is correct. Goodbye!

Answer 21

ok thanks @Dbzfan836

Answer 22

goodbye