PRASHANT KUMAR @The Fighter
Math
The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m²
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The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m²
158 m sq.
158 m sq.
See less158 m square
158 m square
See less158
158
See lessRadius of the roller (r)=84/2cm=42cm length of the roller (h)=120cm ∴ Area of the playground levelled in taking 1 complete revolution 2πrh =2×227×42×120=31680cm2 ∴ Area of the playground =31680×500=15840000cm2 15840000/100×100m² = 1584m²
Radius of the roller (r)=84/2cm=42cm
length of the roller (h)=120cm
∴ Area of the playground levelled in taking 1 complete revolution 2πrh
=2×227×42×120=31680cm2
∴ Area of the playground
=31680×500=15840000cm2
15840000/100×100m² = 1584m²
See less158 Is the Correct answer
158 Is the Correct answer
See less