Mathematics: You run into this child.............what do you do?

You run into this child.............what do you

5nathanomadrid5

09.09.2022

we are given

diameter=84cm

so,

radius =r=42cm

height=h=120cm

we know that

shape of roller is always in cylinder form

now, we can find surface area of cylinder

$SA=2\pi r h$

now, we can plug values

$SA=2\pi *42*120$

SA=31667.25395 cm^2

we know that

In one rotation , it covers area is 31667.25395 cm^2

There are 500 rotation

so, total area = 500*31667.25395 cm^2

total area = 15833626.975 cm^2

now, we need to change that area into m^2

we know that

$1cm^2=\frac{1}{10000} m^2$

now, we can multiply both sides 15833626.975

we get

$15833626.975cm^2=15833626.975*\frac{1}{10000} m^2$

15833626.975cm^2=1583.36270 m^2

so,

Area of playground is 1583.36270 m^2 .............Answer

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