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14 A large dice has a side length of 9.2 cm. Estimate the surface area of the cube.

A large dice has a side length of 9.2 cm. Estimate the surface area of the cube.

$S o l u t i o n : S u r f a c e a r e a o f c u b e = 6 a^{2}$

$\Rightarrow {(9.2)}^{2} = 9.2 x 9.2 = 84.64 a p p r o x i m a t e v a l u e c a n b e t a k e n a s 85 .$

$\Rightarrow 6 x 85 = 610 c m^{2} .$

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Ruhi Quadri Published on 05 Nov 2020