c. Add the square foot area of the base to the square foot area of the cone side for total square foot area. Circle To determine the square footage of the area of a circle, multiply 3.1416 times the radius (in feet) squared. Circumference To determine the circumference of a circle, multiply 3.1416 times the diameter (twice the radius). Triangle Multiply the base measurement (in feet) times one-half the altitude (in feet).

Multiply the radius (in feet) by itself. Then multiply this number by pi (approximately 3.141592). There should be a pi (π) button on your calculator to make this easier. This number is the area of the circle in square feet.

For example, A circle 6 feet wide (6 ft. diameter) has a radius of 3 feet (diameter = 2r). The area would be A = (3.1416) x (32) = 3.1416 x 9 = 28.2744 square feet for a 6-foot circle. Remembering the Formulas Many people confuse circumference and area.

Find the square area of a circle using the formula π times r-squared where π is approximated as 3.14 and r equals the radius of the circle. The radius, the distance from the circle’s center to the edge, is squared, meaning multiplied by itself. Calculate using the same units as the answer requires.

1 square inch = 0.00064516 square foot Calculating Cost Per Square Foot When painting a house, installing flooring, or building a home, the square footage of the property is often used to determine cost or materials to be used.

This gives you your square feet figure (ft 2). To work out your cost of materials, simply multiply this figure by your ‘cost per square feet’. The formula for calculating the area of a circle is: π r 2 (with r being the radius of the circle, which is half the diameter). π is the symbol for pi (3.14159265).

Jul 01, 2006 · How many linear feet is the diameter of a 260 sq. ft. circle? What is the area of a figure if there is a semi-circle with the diameter of 7.1ft and a triangle that is 5.3ft Does anybody understand circles?

Understanding the Square footage: To understand how to calculate square footage we must first begin with the definition of area. An area is the size of a two-dimensional surface. The area of a circle is the space contained within its circumference (outer perimeter).

Multiply the result by pi (use the button on the calculator) or 3.14159 (36 x 3.14159 = 113.1). The result is the area of the circle in square feet–113.1 square feet.

For example, A circle 6 feet wide (6 ft. diameter) has a radius of 3 feet (diameter = 2r). The area would be A = (3.1416) x (32) = 3.1416 x 9 = 28.2744 square feet for a 6-foot circle. Remembering the Formulas Many people confuse circumference and area.