What is the total length of weather stripping needed for 12 windows that each measure 90 cm by 12 cm?
So it’s 2448 cm?
12*2(90+12) = ? 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
Do 90x12 then whatever that result is multiply by 12 again.
90x12=1080 1080x12 = 12960
Answer = 12960
To find the total length of weather stripping needed for 12 windows, we first need to calculate the perimeter for each window and then add them together.
The perimeter of a rectangle is given by the formula: perimeter = 2 * (length + width). In this case, the length of each window is 90 cm and the width is 12 cm.
Let's calculate the perimeter for one window:
perimeter = 2 * (90 cm + 12 cm) = 2 * 102 cm = 204 cm
Now that we have the perimeter of one window, we can multiply it by the number of windows to get the total length of weather stripping needed:
total length of weather stripping = perimeter * number of windows = 204 cm * 12 = 2448 cm
Therefore, the total length of weather stripping needed for 12 windows is 2448 cm.
2448 cm
it's only length
the weatherstripping goes around the window -- it does not cover it.