How do you find area with diameter?
The formula for the area A as a function of the diameter d of a circle is given by A = π (d/2)^2.
Which formula is suitable for the area of a circle whose diameter is?
The area of a circle when the diameter ‘d’ is known is πd2/4. π is approx 3.14 or 22/7. Area(A) could also be found using the formulas A = (π/4) × d2, where ‘d’ is the radius and A= C2/4π, where ‘C’ is the given circumference.
What is the area of 28cm?
This is your answer. Diameter = 28 cm. Radius = D/2 = 14 cm. Hence the area of the given circle is 616 cm².
What is radius and diameter of a circle?
The diameter is a straight line that passes through the center of the circle. The radius is half of the diameter. It starts from a point on the circle, and ends at the center of the circle.
What is the formula to find area of circle?
The area of a circle is the amount of space the circle covers. The formula for calculating the area of a circle is A = π_r_ 2 where pi (π) equals 3.14 and the radius (r) is half the diameter. Determine the diameter.
How do you find the area of a circle equation?
The formula for the area of a circle is π x radius 2, but the diameter of the circle is d = 2 x r 2, so another way to write it is π x (diameter / 2) 2.
What is the formula for finding the diameter of a circle?
If you know the area of the circle, divide the result by π and find its square root to get the radius; then multiply by 2 to get the diameter. This goes back to manipulating the formula for finding the area of a circle, A = πr 2, to get the diameter. You can transform this into r = √(A/π) cm.
How do you find diameter of circle?
How to find the circle’s diameter depends on the information available. If the circle is drawn to scale or if it’s an actual circle, you can calculate the diameter by measuring from one side of the circle to another, making sure the ruler passes through the circle’s center. If you know the radius of the circle, multiply it by 2 to find the diameter.
