The volume of a sphere can be calculated using the formula V = (4/3)πr^3, where r is the radius of the sphere. Given that the diameter is 30 cm, the radius would be 15 cm. Plugging this into the formula, the volume of the sphere would be approximately 14,137.17 cubic centimeters.
20g
A typical 30cm plastic ruler weighs around 30-40 grams, while a wooden ruler of the same size may weigh slightly more.
A standard ruler is typically 30cm long, so an object that is 19.5cm long could be a smaller ruler, a pencil, or a regular sized envelope.
The pressure at the bottom of the pitcher of water 35cm deep is higher than at the bottom of the bathtub of water 30cm deep. Pressure in a fluid increases with depth, so the deeper the water column, the greater the pressure at the bottom. This is due to the weight of the water above exerting a force on the bottom.
If the sum of the focal length and radius of curvature is 30cm for a spherical mirror, then the focal length is half of this sum, which would be 15cm.
circumference = diameter X pi pi = 3.1416 circumference = 30cm X 3.1416 = 94 cm
60cm
d = 9.55 cm
30/pi cm
d = 9.55 cm
Diameter = 30cm so radius = 15 cm. Then Area = pi*r2 = 706.9 cm2
The diameter of a circle is the distance across it, passing through the center. If the diameter is 30 cm, that means the full width of the circle from one edge to the opposite edge is 30 cm. Therefore, the diameter is simply 30 cm.
Area = π*d2 / 4 d = 30 cm => area = 706.86 sq cm
Surface area of sphere: 4*pi*15^2 = 900*pi square cm
about 30cm about 30cm
Volume = 4/3*pi*153 = 14137.167 cubic cm rounded to 3 decimal places
30cm = 0.3m