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If the edge of cube is …

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If the edge of cube is doubled a . Find the ratio of the original volume to new volume b . Find the ratio of new surface area to the original surface area.

Posted by Sundram Jha 4 years, 11 months ago

CBSE > Class 08 > Mathematics

1 answers

Shruti ? 4 years, 11 months ago

a) Ratio = 1:8 b) Let the length of the edge of the cube be 'x' cm (i) Total surface area = 6x² cm² Increased length of the edge = 2x Total surface area = 6(2x)² cm² = 24x² cm² If the edge of the cube is doubled surface area of the cube increases by 4 times. Ratio = 1:4

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Posted by Monika 8B 5 months, 3 weeks ago

CBSE > Class 08 > Mathematics