plz svl this qiestion with proper answer
Attachments:
Answers
Answered by
0
Answer:
Radius of plate = 20 cm
diameter = 40 cm ( 2 × radius)
π = 3.14
Therefore, area of top circle
= πr² = 3.14 × 20×20
= 1256 sq.cm
Therefore, to polish the top surface of 12 such plates
= 12.56 × 12 (converted into metre)
= 150.72 sq cm
Rate of polishing per sq.m = 450 rupees
Therefore, polishing for 12.56 sq.m = 12.56 × 450 = 565,2 rupees.
Answer = Cost for polishing 12 such plates will be 5652 rupees.
THANK YOU!
HOPE IT HELPS YOU IF IT DOES DO MARK ME AS BRAINLIEST!
Similar questions