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Its just the area of a circle
21 inches or 21 centimeters?
area of a circle is (pi)*r2 where pi = 3.1415.... and r = radius
thus A = (3.1415)*(diameter/2)2
u can figure out the answer from that with a calculator
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∙ 15y ago
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Find the volume of a square pyramid with base edges of 21 feet and a height of 18 feet?
Volume of this pyramid is (area of base) x (height) / 3. The area of the base (square) is (edge)2 So (21 ft)2 * (18 ft)/3 = 26586 cubic feet
What is the diameter of a circle with a radius of 21 ft?
If radius=21 ft, then diameter = 2*radius = 42 ft
Diameter of 66 inch circumference?
Divide your circumference by pi. Diameter is 66 / 3.141592654 = 21 inches.
How many square feet in a 21' foot diameter circle?
346
How many gallons of water are in an area with a 42 inch diameter circle that is 96 inches tall?
The volume of a cylinder is (pi) x (radius of the base)2 x (height)Radius = 1/2 diameterVolume of the tall tin-can you've described is (pi) x (21)2 x (96) = 133,002.5 cubic inches = 575.77 gallons. (rounded)That's the volume of the shape you described. We have no way of knowinghow much water may be in it at any given time. For all we know, it may beempty, or full of chicken feathers etc.
What it the area of the base of the cylinder if the diameter is 4 and the length is 21?
The area of the base is 12.6
What is the surface area of a cone if the height is 21 and the diameter is 19?
The surface area of a cone if the height is 21 and the diameter is 19 is 971.43 units2
What is the area of a circle with the diameter is 21?
346.36 square units.
What is the volume in cubic feet of a cylinder with a diameter of 21 inches and height of 17 inches?
The volume of this cylinder is approximately 3.41 cubic feet.
The total surface area of a cone if its slant height is 21'm and its diameter of its base is 24'm is?
Total surface area of cone = (pi*radius*slant height) + (pi*radius2) Area = (pi*12*21) + (pi*122) = 1244.070691 or about 1244 square m
What is the area of a circle with a diameter of 21?
Area of a circle = pi*radius2 Area = pi*10.52 = 346.3605901 square units
What is the area of a circle that has a diameter of 42 yards?
A circle with a radius of 21 yards has an area of 1,385.44 square yards.
What is the surface area of a cylinder that is 21 radius and 4 in height?
3298.67 units2
What is the surface area of a cylinder with a 4 radius and 21 height?
Total surface area = 628.3 square units.
How do you find the area of a triangle with base 21 inche and height 8 inches?
area = 1/2*base*perpendicular height =1/2*21*8 =84 square inches
What is the surface area of an open cylinder whose radius is 10.5cm and a height of 21cm?
Surface area of a cylinder without the end caps = 2*pi*10.5*21 square cm.
How many Cubic feet are in a cylinder with a 36 ft diameter and 21 feet tall?
6,084*pi cubic feet or about 21,364.56 cubic feet.
