What is the total length of weather stripping needed for 12 windows that each measure 90 cm by 12 cm?

8 answers

12*2(90+12) = ? cm
2448 cm
Hang on something seems off on this. Don’t we just multiply 90 and 12?
I’m assuming this is an area question. Length * Width
it's only length
the weatherstripping goes around the window -- it does not cover it.
So it’s 2448 cm?
No, use the equation oobleck gave you.
Do 90x12 then whatever that result is multiply by 12 again.

90x12=1080 1080x12 = 12960

Answer = 12960