the diagonal of cube is 12cm the find the edge
kkoushik096:
once say edge of a cube formula
which class are you studying
a√2 for face and a√3 for space.
10th
I am in class 9 and till class 8 they would know only obe formulae
*know
I am saying about root 3×a
*1
which school
what is *1
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Answered by
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length of diagonal of a cube = √12 cm
Recall that length of diagonal of a cube = √3 × Length of edge of the cube
⇒ √12 = √3 × Length of edge of the cube
∴ Length of edge of the cube = √12 / √3 = 2√3 / √3 = 2
Thus the edge of the given cube is 2 cm
I am not asked root 12 just 12
Answered by
1
In cube ABCD all the sides are equal.
Diagonal = 12cm= AC
Sides =AB = BC = x
By Pythagoras Theoram :-
AB^2 + BC ^2 = AC ^2
x^2 + x^2 = 12
2 x^2 = 12
x^2 = 10
x = square root of 10
So the edge of the cube is square root of 10 cm .
Diagonal = 12cm= AC
Sides =AB = BC = x
By Pythagoras Theoram :-
AB^2 + BC ^2 = AC ^2
x^2 + x^2 = 12
2 x^2 = 12
x^2 = 10
x = square root of 10
So the edge of the cube is square root of 10 cm .
Delhi public. school¿
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Nirmala
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I am studying in Bhashyam
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