Question

The total surface area of cube is 150sq.cm.find the perimeter of any one of its faces

Answer 1

Total surface area(TSA) = AREA of one face × Total number of face in cube
TSA = 6×a² { here a= side of cube}
a² = TSA/6 = 150/6 = 25 cm²
a =√25 = 5cm

perimeter of all face are equal and each is given by [ 4a]
Perimeter = 4×5 cm =20 cm

Answer 2

Total surface area(TSA) = AREA of one face × Total number of face in cube

TSA = 6×a² { here a= side of cube}

a² = TSA/6 = 150/6 = 25 cm²

a =√25 = 5cm

perimeter of all face are equal and each is given by [ 4a]

Perimeter = 4×5 cm =20 cm

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