You have 4 walls, 2 with length 12 feet, 2 with length 15 feet and each of them has a height of 12 feet
so you sum all the lengths and then multiply it by the height to get the total area
total length=2*(12+15)
=2*(27)
=54
total area=total length*ceiling height
=54*12
=648 feet^2 to cover all walls with wallpaper
9514 1404 393
Answer:
(a) cos(55°) = 11/x
Step-by-step explanation:
The marked sides are the hypotenuse (x) and the side adjacent to the given angle (11). Then the relevant trig ratio is ...
Cos = Adjacent/Hypotenuse
cos(55°) = 11/x
Answer:
Step-by-step explanation:
area formula is
π
plug in values:
9π
which equals
28.2743339
or you can write 9π im not sure what your teacher prefers
circumference formula is
2πr
which equals
6π
or
18.8495559
Divide 18000 by 24= get a calculater