0
Are of whole circle=TTr^2
so... A=TT2^2
exponents before multiplying so... A=TT4
this is usually written as 4TT so lets write it that way...
now you know A=4TT
so... if 4TT=12.56637061...
lets just say 12.566
that's the area of the circle...
BUT!!
you need the area of a SEMI circle which is a HALF circle.
so... you need to divide a WHOLE circles area with a radius of 2 BY 2 which means...
12.566/2 is your area
the answer to this??
6.283185307......
or simply enough...
6.283
AKA:
2TT
hope this helps...
What else can I help you with?
What is the area of the semi circle 30 feet?
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.
What is the area of a half circle with a radius of 8 feet?
The area of a Semicircle is (Pi X R^2)/2 SO … (3.14159 X 64)/2 is 100.53
What is the area of the semicircle if the length of the arc of a semicircle is 10 and pi feet?
It is 27.49 units.
A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the window with a perimeter of 45 feet?
To find the area of the Norman window, you need to divide the perimeter by 2 to get the width of the rectangle, which is 22.5 feet. The radius of the semicircle is half of the rectangle's width, so it's 11.25 feet. The area of the rectangle is 11.25 * 22.5 = 253.13 square feet, and the area of the semicircle is 0.5 * pi * 11.25^2 = 198.93 square feet. So, the total area of the window is 253.13 + 198.93 = 452.06 square feet.
The diameter of this semicircle is 15 feet. One bag of mulch spreads 6 square feet. How much mulch will be needed for this area?
The area of a circle is the product of the square of the radius squared and the number pi. The area of a semicircle is half the area of the corresponding circle. The diameter is twice the radius. Therefore, the area of this semicircle is pi(15/2)2/2 = 8 X 101 square feet, to the justified number of significant digits -- only one, since the value 6 has only one. At 6 square feet of mulch per bag, over 13 bags of mulch will be needed; therefore, 14 bags should be available.
What is the area of a figure formed using a semicircle with a diameter of 16 feet and a trapezoid with a height of 8 feet and bases of 12 feet and 14 feet?
Oh, what a lovely combination of shapes you have there! Let's start by finding the area of the semicircle, which is half the area of a full circle. Then, we can calculate the area of the trapezoid using its height and the average of its bases. Finally, we add these two areas together to find the total area of your beautiful figure. Remember, there are no mistakes, just happy little accidents in math!
The radius of the semicircle is 5 feet and the dimensions of the rectangle are 10 ft by 16 ft The semicircle is attached to the width of it What is the perimeter?
Perimeter = (2*pi*5*1/2)+10+16+16 = 57.70796327 or 58 feet
What is the area of a circle with a radius of 3 feet?
The area of a circle with a radius of 3 feet is: 28.27 square feet.
What is the area of a circle if the radius is 6.8 feet?
A circle with a radius of 6.8 feet has an area of 145.27 square feet.
What is the area of a circle with a radius of 35 feet?
A circle with a radius of 35 feet has an area of 3,848.45 square feet.
What is the area of a circle when the radius is 2.00 feet?
A circle with a radius of 2.00 feet has an area of 12.57 square feet.
What is the area of a circle if the radius of the circle 14 feet?
A circle with a radius of 14 feet has an area of 615.75 square feet.
