Question

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

Answer 1

Total surface area of cubes (TSA) = 6a²

(1) a = 3cm

TSA = 6 × 3 × 3

TSA = 54 sq.cm

(2) a = 5 cm

TSA = 6 × 5 × 5

TSA = 150 sq.cm

(3) a = 5,5 cm

TSA = 6 × 5.5 × 5.5

TSA = 181.5 sq. cm

Answer 2

Step-by-step explanation:

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TSA of cube = 6a

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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