Question

the diameter of roller is 84cm and it's length is 120cm. It takes 500 revolutions to roll once over the play ground to level. find the area of the play ground​

Answer 1

Answer:

Step-by-step explanation:

Hope this is helpful to u plz refer from the attachment

Answer 2

Step-by-step explanation:

d =84

circum....=2pi r

cir...=2×22/7×42

cir...=264

CSA OF ROLLER =2PI RH

CSA=264×120

CSA=31680

AREA OF PLAYGROUND = 500×CSA

=15840000CM

1584meter