Question

find the each face of a cube is 20 cm . find its lateal surface area​

Answer 1

Answer:

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Step-by-step explanation:

Let a be the edge of cube,

∴ Perimeter of one face of cube 

= 20 cm 

⇒ 4a = 20 ⇒ a = 5 

∴ Lateral surface area of cube 

= 4a2

= 4 (5)2 = 100 cm2 

Answer 2

Lateral Surface Area of cube=4side²

=(4 × 20 × 20)cm²

=1600 cm²