What is the radius of a circle with a circumference measuring 24 pie cm?

1 answer:

5 0

By the way, it's pi, not pie. just wanted you to know as you may lose marks in tests for spelling (but i may be wrong)

we know circumference is pi multiplied by the diameter.
the diameter is 2x the radius
we can re-arrange the first fact to get:
diameter (or 2x radius) = circumference divided by pi.
since the circumference is 24pi we can cancel off pi from the circumference (24pi) and pi.
now we have the diameter = 24
since the diameter is 2x the radius you divide both sides by 2 and get:
radius=12cm

You might be interested in

5 (2+5) 2 2 715cm? value of h

kirill115 [55]

Answer:

Is this a complete question?

7 0

3 years ago

A giraffe can run about 14 meters per second. Find it's speed in miles per hour

Inga [223]

(14 meter/sec) x (1 mile/1609.344 meter) x (3,600 sec/hour) =

(14 x 3600) / (1609.344) = 31.32 mile/hour (rounded)

4 0

3 years ago

A person on a runway sees a plane approaching. The angle of elevation from the runway to the plane is 11.1° . The altitude of th

Gnoma [55]

Answer:

The horizontal distance from the plane to the person on the runway is 20408.16 ft.

Step-by-step explanation:

Consider the figure below,

Where AB represent altitude of the plane is 4000 ft above the ground , C represents the runner. The angle of elevation from the runway to the plane is 11.1°

BC is the horizontal distance from the plane to the person on the runway.

We have to find distance BC,

Using trigonometric ratio,

$\tan\theta=\frac{Perpendicular}{base}$