0
Is the 30ft the radius or the diameter.
The area of a circle = Pi x (radius squared), so, if the diameter is 30ft, making the radius 15ft, the area would be Pi x(15 squared) square feet, and the area of its semicircle would be half of that, so the area required = Pi x (15 squared) divided by 2 = 353.429 sq ft
On the other hand, if the diameter is 15ft, making the radius 7.5ft then the area required = Pi x (7.5 squared) sq ft for the full circle and half as much for the semicircle = 88.3573 sq ft
As an extra; you will find that the area of the smaller semicircle is exactly one quarter of that of the larger semicircle, and I wonder if you can reason out why that is so.
Add your answer:
Earn +20 pts
What is the area of a circle with 30 ft radius?
A circle with a radius of 30 feet has an area of 2,827.43 square feet.
In a circle a 90 degrees sector has an area of 225 pie in squared What is the radius of the circle?
area = 225 pi = pi R squared/4 R = square root 900 = 30 in
What is the area of a circle with a diameter of 30m?
The formula for area of a circle is Pi x r (squared), A = Pi(rxr). So since the diameter is 30 you divide it by two and get 15 and then square it and multiply it by pi and get 706.86 meters.
What is the width of a rectangle with an area of 300 square feet if it is 3 feet?
300 square feet could be 3 x 100 or 30 x 10.
What is the cross-sectional area in square feet of the flow in a rectangular channel if it is 30 inches wide and flowing 1.9 feet deep?
4.75 square feet
What is the area of a circle with 30 ft radius?
A circle with a radius of 30 feet has an area of 2,827.43 square feet.
How many square feet in a circle of 30 feet?
Area of a circle = pi*radius squared
What is the area of a 30 foot circle?
A = 706.9 square feet.
Circle 8ft x 30 in cu ft?
1. A circle can't be "8 ft x 30 inches". The length and width of a circle are the same, by definition. 2. The area of a circle would be in square feet, but not in cubic feet.
What is the circumference of a circle that is 30 feet across?
The circumference of a circle that is 30 feet across is: 94.25 feet (diameter x Pi = circumference).
What is the circumference of a circle when the diameter is 30 feet?
circumference = 30*pi feet
How many square feet in a circle that is 60 feet in diameter?
Area of any circle = (pi) x (Radius)2Radius = 1/2 of the diameterArea of this particular circle = (pi) x (30)2 = 900 pi = 2,827.43 square feet (rounded)
The circumference of a 30 ft circle?
The circumference of a 30 ft circle is: 94.2 feet.
How many square inches in a 5 foot diameter circle?
The area of a circle is pi × r2. pi = 3.141592653589793 5 feet = 60 inches. The radius is half the diameter so the radius is 30 inches. If you plug 30 inches into the formula you get the answer of 2827.4333882308138 inches for the area of the circle.
What is the circumference of a 30 foot circle?
The circumference of a 30-foot diameter circle is: 94.248 feet.
How many square feet is a circle with a radius of 3000 feet?
Area of a circle = pi*radius squared Not that 30 inches = 2.5 feet
What is the 30 inch circle area?
Area of a circle = pi*radius squared
