A roll of wallpaper is 10 meters long and 0.5 meters wide. Assuming that there is no wastage, how many rolls of wallpaper would Michelle require to cover the two walls?

11
24
12
30

Question

A roll of wallpaper is 10 meters long and 0.5 meters wide. Assuming that there is no wastage, how many rolls of wallpaper would Michelle require to cover the two walls?

11
24
12
30

anonymous · Answer

attachment

danmac0710 · Answer

What is the area of the walls please?

danmac0710 · Answer

Ah, there is an image - hold on a minute....

danmac0710 · Answer

I am assuming the question refers to the 2 walls we can see from the cuboid. First calculate the area of the 2 walls using base  x height, then work out the total area of the wallpaper. Then divide the area of the wallpaper by the area of the 2 walls. If you round this answer up you will get the number you need. Hope this helps. Daniel

anonymous · Answer

so its 30

danmac0710 · Answer

Area of walls is 30 x 2 = 60, and each roll is 10 x 0.5 = 5 (both are in metres squared).... therefore you need 60/5 which is 12. Try it for yourself.