113ft2
The formula for area of a circle is A = (pi)r2. If the diameter is 12 feet, then the radius is 6 feet, so:
A = (3.14...)(6)2 = (3.14...)x36 = 113.09... = approx 113
The surface area of a sphere with a diameter of 18 feet is: 1,020 square feet.
c
Area of the circle = pi*62 = 113.097 square feet to 3 decimal places
The diameter is twice the length of radius, so it is 28 feet.
Surface area = 4*pi*82 = 804.248 square feet rounded to 3 dp
To calculate the surface area of a circular spa, you can use the formula for the area of a circle: ( A = \pi r^2 ), where ( r ) is the radius. For a spa with a 12-foot diameter, the radius would be 6 feet (half of the diameter). Plugging this into the formula gives you ( A = \pi (6)^2 \approx 113.1 ) square feet. Therefore, the surface area of the spa is approximately 113.1 square feet.
Assuming you are referring to a circular area, the diameter is 37.01 feet.
The surface area of a sphere with a diameter of 18 feet is: 1,020 square feet.
A circular shape with an area of 65 square feet has a diameter of 9.1 ft approx.
c
A cylinder 10 feet in diameter by 75 feet long has a surface area of 2,513.3 square feet.
The surface area is 1,020 square feet.
200.96 square feet.
Surface Area = 2,387.61 ft2
Surface Area = 2,760.67 ft2
The curved surface area is 155.19ft2
30 feet