What is the circumference with a radius of 6?
If r = 6 cm, the the circumference is c = 2π(6) = 12π cm, if writing in terms of π.
What is a diameter and radius?
Radius, Diameter and Circumference The Radius is the distance from the center outwards. The Diameter goes straight across the circle, through the center. The Circumference is the distance once around the circle.
How do you convert radius to diameter?
Multiply the radius by 2 to get the diameter.
What is the radius of a half acre?
Half acre nominally contains 21780 square feet. A circle with radius 83.26 feet has: diameter 166.53 feet, perimeter 523.16 feet, area 21780 square feet. An actual plot of land might be bounded by a road in front and a river in back.
Is a chord sometimes a radius?
A chord is sometimes a radius. A chord can be longer than a diameter of the same circle. A chord can be shorter than a radius of the same circle. A radius is always congruent to another radius of the same circle.
What is the area of a 6 cm radius?
28.27 square centimeters (cm²)
How do you draw a radius of a circle 6 cm?
Step 1: Use a ruler and compass and set the compass at 6 cm to draw a circle of radius 6 cm. Step 2: Now draw a line passing through the center and joining at the endpoint of the circle at both sides, mark it as AB, which will be the diameter of the circle.
What’s the area of the radius is 3?
A circle of radius = 3 or diameter = 6 or circumference = 18.85 meters has an area of: 2.827 × 10-5 square kilometers (km²)
What is the area of the radius is 7?
So, area of the given circle =π×7×7=49π
What is the area of a radius of 8?
We know that, the Area of the circle with radius r is: A=πr2,where,r=8 inches given. So, A=π(8)2=64π square inches.
What is the radius of 21cm?
What is the area of a circle with radius 21 cm?
| Result: The area of a circle with radius 21 is 1385 | |
|---|---|
| Formulae: | |
| r = 21 d = 42 C = 132 | A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter |