Question

WILL GIVE A MEDAL HELP
(a) A liter of paint covers an area of 9 square meters. It takes 3 liters of paint to paint a rectangular wall that is 7 meters high. How wide is the wall ?

(b) A liter of paint covers an area of A square meters. It takes v liters of paint to paint a rectangular wall that is h meters high. How wide is the wall ?
(a) width of wall = _________ meters
(b) width of wall = ________ meters

Answer 1

" A liter of paint covers an area of 9 square meters. It takes 3 liters of paint to paint a rectangular wall "

so what is the area of the entire wall?

Answer 2

If one liter of paint is 9 square meters, and it takes 3 liters of paint the wall, you will have to multiply 9 by 3, which ends up with 27.

Answer 3

correct, the wall is 27 square meters

Answer 4

we have this wall

Answer 5

x is the width of the wall

Answer 6

how can we find x?

Answer 7

27/7

Answer 8

good

Answer 9

cool ok

Answer 10

A liter of paint covers an area of A square meters. It takes v liters of paint to paint a rectangular wall that is h meters high. How wide is the wall ?

Answer 11

This is the same idea, but now just using unknown variables instead of numbers

Answer 12

wait thats it for 1A???

Answer 13

yes

Answer 14

part a)

Answer 15

okay

Answer 16

"A liter of paint covers an area of A square meters. It takes v liters of paint to paint a rectangular wall that is h meters high"

the wall is A*v square meters

the height is h

Answer 17

what is x?

Answer 18

so we would solve for x then?

Answer 19

x=h/A

Answer 20

Area = Length * Width

Av = h*x

x = Av/h

Answer 21

oh rightt _._ I see my mistake

Answer 22

thank you, I now understand the problem!

Answer 23

I'm glad it's clicking