## A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surfac

Question

A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?<br /><br />

A) 2 : 1 B) 3 : 2 C) 25 : 18 D) 27 : 20

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2021-08-18T06:51:05+00:00
2021-08-18T06:51:05+00:00 2 Answers
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## Answers ( )

Answer:Let x be the edge of the large cube. Then,

Therefore, required ratio = Total surface are of smaller cubes ÷ Surface area of smaller cubes

= 25 : 18.

Answer:261

Step-by-step explanation:A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube? Explanation: Volume of the large cube = (33 + 43 + 53) = 216 cm3.