Pi-R-Squared.
pi*R^2
That's the formula for area of a circle, where R=radius.
For R=7 the formula gives 49pi. Some calculators have pi buttons, but estimating pi=3.14 is often close enough for real-world application.
49*3.14 = almost 154 square feet.
A circular shape with an area of 125 sq ft has a radius of 6.31 ft (approx).
Area_circle = π × radius²It depends to what the 15 ft refers, if:15 ft is the radius of the circlearea = π × (15 ft)² = 225π sq ft ≈ 707 sq ft 15 ft is the diameter of the circlediameter = radius × 2 → radius = ½ diameter→ area = π × (15 ft / 2)² = 225π/4 sq ft ≈ 177 sq ft15 ft is the circumference of the circlecircumference = 2 × π × radius → radius = circumference ÷ (2π)→ area = π × (15 ft / 2π)² = 225/(4π) sq ft ≈ 17.9 sq ft
If you meant: How does one measure the area of a circle in Sqft, The formula is: Pi x Radius in Ft squared. i.e. Area of circle in SqFt. =(22/7) x Radius in Ft x Radius in Ft.
the questions is asking you to find the area, so the area of a circle is 3.14r^2. Plug 8ft for radius and you get your answer to be approximately 201.06 sq ft
The answer has a meaning only in 4-dimensional space. 10 sq ft * 7 sq ft = 70 quartic feet.
5.6433 ft radius or 11.2866 diameter
Inner radius of walk = R1 = 10/2 ft = 5 ft. Outer radius of walk = R2 = 5ft + 3 ft = 8 ft Area of fountain = pi*R12 = 78.54 sq ft Area of fountain + walk = pi*R22 = 201.06 sq ft So area of path = 201.06 sq ft - 78.54 sq ft = 122.52 sq ft.
A circle with a radius of 165 feet has an area of pi*1652 = 85530 sq ft, approx.
pi*r2 = 87120 sq ft so r2 = 87120/pi = 27731 sq ft and then r = 166.5 ft.
Anything greater than 3.5 ft
233.5 sq ft
Area of a circle = pi*radius squared