Question

Find the diagonal of a cube if each of whose edge measure 20cm.
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Answer 1

Step-by-step explanation:

formula of diagnol of cube = √3 edge^2

= √3*20^2

=√3*400

=√1200

=34.6......

Answer 2

Answer:

Step-by-step explanation:by the Pythagoras  formula we can solve these question.

h^2=b^2+l^2

here  the side of cube is 20 cm

therefor: H^2=20^2+20^2

H^2=400+400

H^2=800

H=40 THEREFOR

H=D

D=40 CM