Question

Find the surface areas of the cuboids whose dimensions are:

I = 21 cm, b = 14 cm, h = 9 cm PLEASEEE help im weak in maths​

Answer 1

Answer:

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GIVEN :-

length :- 21cm

breath :- 14cm

height :- 9cm

REQUIRED TO FIND

• surface areas of the cuboid

= 2 ( lb + bh + hl )

= 2 [ ( 21 × 14 ) + ( 14 × 9 ) + ( 9 × 21 ) ]

= 2 [ 602 cm ]

= 789 cm²

thus , the required surface area of cuboid is 789cm²