Area = pi*r2
A ratio.
A = pi*(12)2
-------------
A = pi*(10)2
cancel all like factors
144/100
= 1.44 times larger
==============
The diameter of a circle is defined as the distance across the circle through its center. For a circle with a diameter of 15 inches, the diameter is simply 15 inches. Therefore, the diameter of a 15-inch circle is 15 inches.
19.63 square inches are in the area of a 5-inch diameter circle.
The area of a 3-inch diameter circle is about 7.068 square inches.
A circle with an 8-inch diameter has a perimeter of 25.1 inches.
The area of a circle with an 8 inch diameter is approximately 50.27 square inches.
About 3.14 inches (3.14159 to greater precision - it is the diameter x pi)
The diameter of a circle is defined as the distance across the circle through its center. For a circle with a diameter of 15 inches, the diameter is simply 15 inches. Therefore, the diameter of a 15-inch circle is 15 inches.
A 4.75-inch diameter circle contains 17.72 square inches.
The circumference of a six-inch diameter circle is: 18.8 inches.
The circumference of 9 inch diameter circle is about 28.27 inches.
The circumference of a circle with a 20.5 inch diameter is 64.4 inches.
The circumference of a circle with a 39 inch diameter is 122.52 inches.
The circumference of a 6 inch diameter circle is: 18.8 inches. (diameter x Pi = circumference)
The area of a 3-inch diameter circle is about 7.068 square inches.
A circle with an 8-inch diameter has a perimeter of 25.1 inches.
19.63 square inches are in the area of a 5-inch diameter circle.
The area of a circle with an 8 inch diameter is approximately 50.27 square inches.