The answer will depend on whether the shape is a cone or a cylinder. And since you have not bothered to provide that information, I cannot provide a sensible answer.
80*pi
r = 5.0463
If the radius of a circle is 80 inches, then the area of the circle is 139.6263 square feet. (rounded)
Volume is 335.1 mm3
4x7x2=56 4x10x2=80 7x10x2=140 56+80+140=276in
80*pi
The area of a circle is: pi times radius^2
Around 80 m tower height + 40m radius
r = 5.0463
the net that haves more than 80 square units is a square with a height of 20 and and base of 10
Area = Base*Height = 16*5 = 80 sq feet.Area = Base*Height = 16*5 = 80 sq feet.Area = Base*Height = 16*5 = 80 sq feet.Area = Base*Height = 16*5 = 80 sq feet.
If the radius of a circle is 80 inches, then the area of the circle is 139.6263 square feet. (rounded)
Volume is 335.1 mm3
The area is 80 squared units.
Area of a circle = piRsquared = 3.14 x 80 squared = 20,096 square meters.
4x7x2=56 4x10x2=80 7x10x2=140 56+80+140=276in
5x4x4 Volume=80 Surface Area=112