diagonal of a cube is √75cm find surface area , please send me through picture urgent
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answer is in the photo
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Hansol1:
why does 5√3 comes
factorise 75 you get 5*5*3 so now as it is given root of 75 we take 1 of 2 I. e one 5 from two fives and root of 3 from one 3
thanks
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Answered by
1
Hi ,
Let the side of a cube = a cm
Diameter ( d ) = √75 cm
√3× a = √75
a = √75/√3
a = √25
a = 5 cm
Lateral surface area = 4a²
= 4 × 5²
= 100 sq cm
Total surface area = 6a²
= 6 × 5²
= 150 sq cm
I hope this helps you.
:)
Let the side of a cube = a cm
Diameter ( d ) = √75 cm
√3× a = √75
a = √75/√3
a = √25
a = 5 cm
Lateral surface area = 4a²
= 4 × 5²
= 100 sq cm
Total surface area = 6a²
= 6 × 5²
= 150 sq cm
I hope this helps you.
:)
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