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What is pi r2 divided by 2 plus 80 times 50?
(pi*r2)/2 + 4000
What is the formula for calculating surface area of a hemisphere?
The surface area of a whole sphere, of radius r, is 4*pi*r2.The area of the curved surface of a hemisphere is, therefore, 2*pi*r2.The area of the flat surface is that of a circle of radius r, that is = pi*r2.So the total surface area of a hemisphere is 2*pi*r2 + pi*r2 = 3*pi*r2.
What is the formula for finding the Surface Area of a frustum of a cone?
Lateral Surface Area = π(r1 + r2)s = π(r1 + r2)√((r1 - r2)2 + h2)Top Surface Area = πr12Base Surface Area = πr22Total Surface Area = π(r12 + r22 + (r1 * r2) * s) = π[ r12 + r22 + (r1 * r2) * √((r1 - r2)2 + h2) ]
How can you find the area of a circle with one flat side?
If the radius of the circle is R, and the length of the flat region is c, then the area of the circle containing a flat is: A = R2 [Pi - Arcsin(c / 2R)] + [(c / 2) (R2 - (c / 2)2)1/2] After some calculus and algebra
What is the surface area of a cylinder with a radius of 8 and a length of 14?
Surface area = 2*pi*r2+ 2*pi*r*h = 1105.8 sq units.=Surface area = 2*pi*r2+ 2*pi*r*h = 1105.8 sq units.=Surface area = 2*pi*r2+ 2*pi*r*h = 1105.8 sq units.=Surface area = 2*pi*r2+ 2*pi*r*h = 1105.8 sq units.=
