Question

If the c.s.a of cube is 1600m . Them find its edge

Answer 1

C.S.A of cube = 1600 m

Let a be the edge .

$\longrightarrow 4a^{2} =1600\\\\\longrightarrow a^{2} =1600\div 4\\\\\longrightarrow a^{2} =400\\\\\longrightarrow a=\sqrt{400} \\\\\longrightarrow \bf a=20$

The edge of the cube = 20 m

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