A sphere with a radius of 9 units has a volume of 3,053.63 units3
These dimensions are not possible for a right cone. The radius must be less than the slant height. If we reverse the dimensions (radius 6, slant height 9) the total surface area will be about 282.74 units2
The cross section at this point forms a circle and its area is pi/32 which equals 9*pi square units. * * * * * Not quite. If the radius of the sphere is R units then the radius of the cross section is sqrt(R2 - 32) Therefore the cross sectional area is pi*(R2 - 32) square units.
The surface area of a sphere is 4 x pi x r x r so in our case (since we have only half a sphere (hemisphere) the surface ares would be (0.5) x 4 x pi x 9 x 9 =162 x pi square cm. But now you have to add the area of the base because it gets exposed when youcuta sphere (to get the hemisphere) and the area of the base would be pi x r x r = pi x 9 x 9 = 81 x pi square cm. So add the two results to get 243 x pi = 763.4 square cm
A cone with the radius of 5 cm and slope height of 9 cm has a total surface area of approximately 219.91cm2
The sphere's surface area is ~1,017.9 square units.
9
The surface area of a sphere is directly proportional to the square of its radius. A ∝ r2 r = 3k A ∝ (3k)2 A ∝ 9k2 therefore, the surface area will become 9 times the size
If the radius of a sphere is tripled, the surface area increases by (3)2 = 9 times, and the volume increases by (3)3 = 27 times.
It is: 4*pi*9 = 36*pi or about 113 square units
1356.48 sq mt Another answer in square feet is : The formula for the surface area of a sphere is 4 x pi x radius squared. The radius is half the diameter, or 3 feet. The radius squared is therefore 9 square feet. The surface area is then 4x3.1415x9 square feet or 113.09 square feet.
The diameter is 2r = 9 The surface area is Pi x diameter2 = Pi x 81 or 254.469 square units.
Formula: 4πr2 Surface Area = 113.09734 units2
Surface area of a sphere. Area = 4 pi r^2 Area = 4 * pi *(0.00002)^2 = 5.0265 X 10^-9 ( whatever units ) ----------------------------------------------
By a factor of 32 = 9. In general, surface area (for any two similar objects) is proportional to the square of any linear measurement.
Surface = 9*pi yd2 Therefore radius = 1.5 yards and so volume = 4.5pi yd3 or 14.137 yd3
Surface area is 1,017.9 square unitsThe formula is A = 4 (pi) r squared4 x 3.1416 x (81) = 1017. 87 rounded up