Table of Contents
What is the diameter of a 8 cm circle?
Circle with diameter 8cm. Circumference = π × 8cm = 25.1cm to 1 decimal place. Circle with diameter 16.5cm.
How do you measure 8 cm in diameter?
Steps of construction :
- Draw a line segment OA=8 cm.
- O as centre and radius 4 cm draw a circle.
- Taking OA as diameter draw another circle which intersects the given circle at B and C.
- Join A to B and A to C.
- Result:AB and AC are required tangents.
What is R 8cm?
Answer: The Circumference of a Circle with Radius r = 8 cm is approximately equal to 50.29 cm.
What is the area of the semi circle whose radius is 8cm?
We can confirm this using the formula for area of a semi-circle, A=r2π2 .
What is the length of the diameter if the radius is 8cm?
Answer: If the radius is 8.8 cm, the diameter is 17.6 cm.
How do you draw a 6 cm diameter circle?
How to draw a circle of diameter 6 cm
- Take your Rounder.
- Insert your pencil.
- measure 3cm in the rounder.
- place the pointed end on the paper and draw the circle.
- The circle drawn will be with diameter of 6 cm.
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 measure the area of a 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.
What is the equation for the area of a circle?
Think of the area of the circle as if you draw the circumference and fill in the area within the circle with paint or crayons. The formulas for the area of a circle are: A = π * r^2. In this formula, “A” stands for the area, “r” represents the radius, π is pi, or 3.14.
How do you calculate the surface area of a circle?
The surface area of a circle is equal to the number pi (~3.14) times the radius of the circle squared. The equation is written as π x r 2. This is the same as saying π x r x r. To find the area of the base, just plug the radius, 3 centimeter (1.2 in), into the equation for finding the area of a circle: A = πr 2.