Question

find the TSA of a cube of side 80cm

Answer 1

Step-by-step explanation:

The surface area is of two type: lateral(LSA) and total (TSA)

LSA of cube is sum of areas of four faces of cube

i.e LSA = 4*area of each face

            = 4* (80)²

            = 25600 cm²

TSA of cube = LSA + area of top and bottom faces

                    = 25600 + 2(80)²

                    = 38400 cm²

Answer 2

Step-by-step explanation:

$t.s.a \: of \:cube \: = 6 {a}^{2} \\ = 6 \times {80}^{2} \\ = 6 \times 6400 \\ = 38400 {cm}^{2} \\ \\ \\ hope \: it \: helps \: u$

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