a cylindrical roller is used to paint a rectangular dias .The length of the roller is 1.4m and its diameter is 0.7m . if the roller rolls 50 times to cover the dials completely. Find the area of the dias
Answers
Answered by
33
ANSWER : 154 m2
EXPLANATION:
Given : In cylindrical roller h = 1.4 m
diameter = 0.7m so r = 0.7/2 =0.35m
curved surface area of roller = 2 pie r h
= 2× 22/7 × 0.35 × 1.4
=44×0.05×1.4
=44×0.070
=3.08 m2
Roller rolls 50 times so CSA = 50×3.08
=154 m2
So the area of dias = 154 m2
…......................................................................
hope it helped u.
EXPLANATION:
Given : In cylindrical roller h = 1.4 m
diameter = 0.7m so r = 0.7/2 =0.35m
curved surface area of roller = 2 pie r h
= 2× 22/7 × 0.35 × 1.4
=44×0.05×1.4
=44×0.070
=3.08 m2
Roller rolls 50 times so CSA = 50×3.08
=154 m2
So the area of dias = 154 m2
…......................................................................
hope it helped u.
Similar questions