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Total Surface Area of a cube

Find the tota...

Question

Find the total surface area of cubes having the following sides.
1) 3 cm
2) 5 cm
3) 5.5 cm

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Solution

TSA of cube = $6 a^{2}$
1) 3 cm
TSA = $6 (3)^{2} = 54$ sq. cm
2) 5 cm
TSA = $6 (5)^{2} = 150$ sq. cm
3) 5.5 cm
TSA = $6 (5.5)^{2} = 181.5$ sq. cm

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