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How do you find the distance traveled on a bike if you know the wheels diameter?
wheel diameter times pi times number of rotations
How do you find circumfrance using diameter?
circumference of a circle = pi*diameter or 2*pi*radius
How do you find the area of a circle without knowing the radius?
If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.
Find the perimeter of a semicircle of diameter 10cm?
First find the circumference of the whole circle using Pi x diameter. Halve the answer and add the diameter. Thus: 3.1416 × 10 = 31.416 ÷ 2 + 10 = 25.708cm So the perimeter of the semi-circle is 25.7cm
How do you find the distance around a figure?
To find the distance around a figure, you calculate the perimeter. The perimeter is the total distance around the outside of a shape or figure. To find the perimeter of a rectangle or square, you add up all the sides. For a circle, you can find the perimeter by multiplying the diameter by π (pi).
