A conical tent made of canvas has a base that is 20 feet across and a slant height of 14 feet. To the nearest whole unit, what is the area of the canvas, including the floor? Use 3.14 for p.
A. 754 ft^2
B. 1,193 ft^2
C. 2,135 ft^2
D. 534 ft^2

Question

A conical tent made of canvas has a base that is 20 feet across and a slant height of 14 feet. To the nearest whole unit, what is the area of the canvas, including the floor? Use 3.14 for p.
	A. 754 ft^2 	
	B. 1,193 ft^2 	
	C. 2,135 ft^2 	
	D. 534 ft^2

anonymous · Answer

Think of the side as a triangle with base 20 pi (the circumference of the floor) and height fourteen.$$Area=floor+side=r^2\pi+bh/2=100\pi+140\pi=240\pi \approx754ft^2$$

anonymous · Answer

what is bh/2

anonymous · Answer

Base time height.  The solution approximates the lateral surface as a triangle.

anonymous · Answer

You can also consider it as a pie cut from a circle, but the calculation is much harder.