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The Volume of a Cube is 729 Cm3. Find Its Total Surface Area - Mathematics

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प्रश्न

The volume of a cube is 729 cm3. Find its total surface area.

योग

उत्तर

Let a be the one edge of a cube.

Volume = a
729 = a3  
93 = a
9 = a
a = 9 cm

Total surface area = 6a2 = 6 x 92 = 486 cm

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अध्याय 21: Solids [Surface Area and Volume of 3-D Solids] - Exercise 21 (A) [पृष्ठ २६९]

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सेलिना Concise Mathematics [English] Class 9 ICSE
अध्याय 21 Solids [Surface Area and Volume of 3-D Solids]
Exercise 21 (A) | Q 2 | पृष्ठ २६९
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