Question

A cuboidal block of metal measuring 45 cm x 30 cm x 0.5 m was melted and recast into cubical
each with an edge of length 3 cm.
(1 ) Find the number of cubes that can be made.
(2) What is the cost of polishing the surfaces of the cubes at the rate of 3 1.25 per cm??
please help me ​... please tell there are 2 parts please tell me anyone also please

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Answer 1

Answer:

(I) 2500 blocks

(ll) 168750 rs

Step-by-step explanation:

Volume of cuboid is L*B*H= 45x30x50= 67500cm^3

Volume of each cubical block= 3x3x3= 27cm^3

Number of blocks we get are= 67500/27= 2500 blocks  

Surface area of cube= 6x(side)^2= 6x3^2= 54.

Total surface area of 2500 cubical blocks:

2500x54= 135000cm^2

Cost of polishing is rs 1.25

So polishing cost= 135000x1.25= 168750 rs

PLZ MARK AS BRIANLIEST AND THX FOR THE SUPERB QUESTION