Aliaa is skating down a ramp. the wheels on her skateboard have diameters of 60 \text{ mm}60 mm. what is the distance aliaa travels when her skateboard wheels make 2020 revolutions?

As per the given statement:

Aliaa is skating down a ramp. The wheels on her skateboard have diameters of 60 mm.

⇒ Diameter of wheel(d) = 60 mm

The distance around the circle or wheel is equal to the circumference.

The number of revolutions(n) completed by rotating a wheel in a given distance

i.e,

n=

Circumference of wheel =

Substitute the given value we get;

Circumference of wheel = mm

To find the distance Aliaa travels when her skate board wheels make 20 revolutions.

⇒ Distance covered =

Substitute the given value we have;

 Distance covered = = mm

Therefore, the distance Aliaa travels when her skate board wheels make 20 revolutions is, 3768 mm

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

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