Question

The side of a cube is 9 cm long. What is the cube's surface area?

Answer 1

Hey!!!

here is ur solution ;-
Given : - a (side) = 9cm

Surface area of cube = 4a²

=> 4×9²

=> 4×81

=> 324cm²

If you want to find total surface area of cube then it's formula is ;-
6a²

=> 6×9²

=> 6×81

=> 486cm² Answer

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Hope it helps you !!

@Rajukumar111

Answer 2

Hey !!

Here is your answer..⬇⬇

➡ Given :- Side of cube is 9cm.
let Side of cube is a, so a = 9 cm.

➡ To Find :- C.S.A and T.S.A

➡ Solution :-

C.S.A = 4a^2
= 4 ( 9 )^2
= 4 ( 81 )
= 324 cm-2

T.S.A = 6a^2
= 6 ( 9 )^2
= 6 ( 81 )
= 486 cm^2


HOPE IT HELPS YOU...

THANKS ^-^