Question

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Q:- Three solid metal cubes with edges 15dm,2m and 25 dm are melted and with the resulting metal, a new solid cube is formed. find the surface of the new cube.
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Answer 1

Hey user

Here ia your answer :-

Three cubes of edges I.e. sides 15 dm 2m = 20dm and 25 dm

Volume of 1st cube ( V1 ) = edge³

= 15³

= 3375 dm³

Volume of 2nd cube ( V2) = edge³

= 20³

= 8000 dm³

Volume of 3rd cube = edge³

= 25³

= 15625 dm³

Volume of new solid cube = V1 + V2 + V3

= 3375 + 8000 + 15625

= 27000

edge of new cube =

$\sqrt[3]{27000}$

= 30dm

Thank you .

Answer 2

Answer:

Flowers with joined sepals:

(i) Cotton

(ii) Hibiscus

(iii) Datura

Flowers with separate sepals:

(i) Jasmine

(ii) Mustard

(iii) Rose