So if i have a circle with an area of 100 meters squared how do you find the circumference?
You need to work backwards.
You know that the area of a circle is found using the formula A = pi (3.14) x radius x radius. So, if you divide the known area (100 meters) by pi [...]
Hi,
Please help me find the answer to this, getting really confused.
The perimeter of a semi circle is 49.7cm, find the area to the nearest square millimetre?
I cant work out how to get the radius or diameter to do the Area = pi x r^2 calculation.
Thanks
Just to clarify i need to find the AREA OF THE [...]
From a piece of tin in the shape of a square 6 inches on a side, the largest possible circle is cut out. Of the following, the ratio of the area of the circle to the area of the original square is closest in value to…:
F. 4/5
G. 2/3
H. 3/5
J. 7/9
K. 3/4
Please explain how you found [...]
Two perpendicular chords divide a circle with radius of 13 inches into four parts. If the perpendicular distances of both chords are 5 cm each from the center of the circle. Find the area of the smallest part.
The area of a quarter of the circle is 169pi/4. From this, take away two circular sectors [...]
A circle has a circumference of 10π cm. What is the area if this circle? Justify your answer completely.
✐Explanation✐
C = 2πr (circumference of a circle)
A = πr² (area of a circle)
Use the circumference formula to determine r first. Then, use the area formula to determine the answer.
C = 10π
10π = 2πr
r = 5 cm
Substitute [...]
The question is: The area of a circle is proportional to the square of the radius. If the area is 113 cm^2 when the radius is 6 cm, find:
the radius of a circle with area 29 cm^2
Please show the working.. It will help me to understand it. Thanks.
A = pi r^2 = 29
r^2 = 29/pi [...]
A sphere of radius 9 meters is intersected by a plane passing 7 meters from the sphere’s center. What is the area of the circle of intersection of the plane and sphere? Please use 3.14 for the approximation of pi.
Radius of the circle = ( 9^2 – 7^2)^0.5 = 5.657 m
area = 3.14 [...]
Ok, so you have to find the area of the shaded shape which is the circle.The circle has a radius of 4cm and the squares’ (which is in the middle of the circle) length is 4×4. Please help me, It’s due for Monday.
Use the formula πr^2 to find the circle.
π x (4)^2 = 50.27
The area [...]
The center circle has a radius of 1000 inches.
Assume that all of the other circles are tangent to the circles adjacent to them. What is the total area, in square inches, of all of the blue-coloured circles?
There are 10 medium circles around the middle and the blue small circles are in the " triangles" of [...]
What is the area of a circle that circumscribes a 45-45-90 triangle if the legs measure 8 cm?
What is the area of a circle inscribed within an isosceles right triangle whose legs measure 8cm?
What is the area of the square that can be placed within a 45-45-90 triangle whose legs measure 8cm? Two of the [...]
