Surface area, S.A., of a sphere with radius r equals to 4pir2.
Since the diameter is decreased by 25%, the radius is also decreased by 25%.
That is r - 0.25r = 0.75r.
So that S.A. = 4pi(0.75r)2 = 2.25pir2
The surface area of a sphere with a diameter of 7cm is 153.9cm2
Surface area of a sphere = 4*pi*radius2 radius = diameter/2
Yes, that's true. The surface area is (the square of the diameter) multiplied by (pi).
A cylinder with a height of 7cm and a diameter of 6cm has a surface area of 188.5cm2
The curved surface area of a cylinder that has a diameter of 8inches and a height of 5inches is 125.66inches2
The surface area decreases by 43.75%.
When the diameter of a sphere is decreased by 25%, its curved surface area decreases by approximately 43.75%. This is because surface area is proportional to the square of the radius, so a 25% decrease in diameter leads to a 43.75% decrease in surface area.
The planet that shrank in diameter is Mercury. Its diameter decreased as its core cooled and contracted, causing its surface to wrinkle and form scarps.
If the surface area of the vibrating body is decreased, the loudness of the sound will also decrease. This is because less energy is being transferred to the surrounding air, resulting in a quieter sound.
There isn't any evidence to suggest that any planet has shrunk in diameter. Planets can experience changes in their composition, atmosphere, or surface features, but their actual size isn't known to decrease significantly.
Yes, if it remains a cube.
the surface
The surface area of a sphere with a diameter of 7cm is 153.9cm2
A decrease in the surface area of the respiratory membrane will result in a decrease in gas exchange.
The surface area of a softball with a diameter of 12 is about 452.4 square units.
The surface area of a sphere with a diameter of 25 inches is about 1,963.5 square inches.
The surface energy decreases with an increase in planar density. This is because a higher planar density means more atoms are closely packed together, leading to a decrease in the number of surface atoms and therefore a decrease in surface energy.