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A square plate of side 'x' cm is 8 mm thick. If its volume is 2880 cm3; find the value of x. - Mathematics

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Question

A square plate of side 'x' cm is 8 mm thick. If its volume is 2880 cm3; find the value of x.

Sum
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Solution

We know that

1 mm = `1/10` cm

8 mm = `8/10` cm

Volume = Base area × Height

⇒ 2880 cm3 = `x xx x xx 8/10`

⇒ `2880 xx10/8` = x2

⇒ x2 = 3600

⇒ x = 60 cm

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Chapter 21: Solids [Surface Area and Volume of 3-D Solids] - Exercise 21 (A) [Page 269]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 21 Solids [Surface Area and Volume of 3-D Solids]
Exercise 21 (A) | Q 10 | Page 269
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