# Materials to Make a Tent

• Sep 23rd 2008, 08:44 AM
magentarita
Materials to Make a Tent
A cone-shaped tent is made from a circular piece of canvas 24 feet in diameter by removing a sector with central angle 100 degrees and connecting the ends. What is the surface area of the tent?
• Sep 23rd 2008, 09:00 AM
masters
Quote:

Originally Posted by magentarita
A cone-shaped tent is made from a circular piece of canvas 24 feet in diameter by removing a sector with central angle 100 degrees and connecting the ends. What is the surface area of the tent?

Just subtract the area of the sector from the area of the circular piece of canvas. Radius (r) = 12.

$\displaystyle A_T = \pi r^2-\frac{100}{360} \pi r^2$
• Sep 24th 2008, 05:14 AM
magentarita
Great...
Quote:

Originally Posted by masters
Just subtract the area of the sector from the area of the circular piece of canvas. Radius (r) = 12.

$\displaystyle A_T = \pi r^2-\frac{100}{360} \pi r^2$

I like your replies because you always allow me to do some of the work.

Thanks