Answers. Here the diameter is 7 cm. So the radius is 7/2 = 3.5 cm.
What is the circumference of a 7 cm circle?
∴, the circumference is about 43.98cm.
What is the area of a circle of 7 cm?
So area of the given circle =π×7×7=49π
How do you find the diameter of a circle?
Circle / Diameter
How do you get the circumference from the diameter?
Circle / Diameter
How do you convert diameter to circumference?
Multiply the diameter by π or 3.14. The result is the perimeter of the circles.
What is the area of a circle of 10?
= 78.5 square inches. July 31, 2015
What is the area of diameter 18?
254.5 square inches (in²)
How do you calculate a diameter?
If you know the radius of the circle, double it to get the diameter. The radius is the distance between the center of the circle and its edge. If the radius of the circle is 4 cm, then the diameter of the circle is 4 cm x 2 or 8 cm. Once you know the circumference of the circle, divide it by π to get the diameter.
How do you calculate a diameter?
When you give the area of a circle, the diameter is equal to the square root of four times the area divided by pi (diameter = √(4 x area)/pi).