(6 pi) inches.
28.3
Well, isn't that just a happy little question! To find the number of square inches in a circle, we use the formula A = πr^2. Since the circle has a radius of 6 inches, we square that (6^2 = 36) and multiply by π to get approximately 113.1 square inches. Just imagine all the lovely colors you could paint in that space!
You can multiply them as mixed fractions, or convert both to inches, then divide by 144 (sq in / sq ft). 9 ft = 108 in, add 7 in = 115 in. 3 ft = 36 in, add 6 in = 42 in. Multiply (115 in) x (42 in) = 4830 sq in. Divide by 144 (sq in/sq ft) = 33.541667 sq ft.
6 inches
If the area of a circle is about 28 square inches the diameter of the circle is: about 6 inches (5.971).
Assuming that 12" round means a circle with a circumference of 12", its radius would be 12/(2*pi) = 6/pi inches. Its area would, therefore, be pi*(6/pi)2 = 36/pi sq inches. In terms of sq mm, that is 7393 sq mm (to 4 sig figs).
6 inches across
36 sq inches.
9*6 = 54 sq inches
To find the area of a circle, you use the formula A = πr^2, where r is the radius of the circle. In this case, the radius is half of the diameter, so the radius is 3 inches. Plugging this into the formula, we get A = π(3)^2 = 9π square inches. Since π is approximately 3.14, the area is approximately 28.26 square inches.
(6 pi) inches.
6 inches across
Well, isn't that a happy little question! To find the square footage, you first convert the inches to feet by dividing by 12. So, 30 inches is 2.5 feet and 72 inches is 6 feet. Then you multiply the two dimensions together to get 15 square feet. Just imagine all the beautiful things you could create in that space!
28.3
A=pi X radius squared 3.14 X 9=28.26 sq. inches
A circle that is 4 feet 6 inches in diameter has an area of: 15.904 square feet.