Circumference is equal to πd and therefore is 22/7 ×40=125 whole number and 5 all over 7
D = ~12.73 cm
The circumference (C) of a circle is given by the formula C = 2πr But, the diameter equals twice the radius so we can write C = πd....where d is the diameter. So, C = 40π = 125.664 (3dp)
circumference = pi*40cm
The Diameter is the distance from one side of the circle all the way to the other side. The Radius is half the distance in a circle. Simply put: 40cm = Diameter 20cm = Radius (Half the distance) :)
In order to find the diameter of a circle if you have the area is to rearrange the formula for the area of a circle to put diameter as the unknown, like so: PIE*d = Area of a Circle d = (Area of a Circle) / PIE Therefore if the area of your circle is 40cm, 40/PIE = 12.73cm and that's the diameter.
they have a diameter of about 40cm
it is about 40cm wide
The diameter of a car tire is 40cm and the diameter of a toy car tire is 18mm. Find the ratio of the diameter of the car to the diameter of the toy car
Diameter = 40 cm implies circumference = 40*pi = 125.7 cm So, in travelling 352 metres = 35200 cm, the wheel will rotate 35200/125.7 = 280.1 times (approx).
A = 5026.5 cm2
A circle with a radius of 40 cm has an area of 5,026.55 square cm.
40cm is 400mm