find area of base ,area of vertical faces and total surface area
of a cuboid when length is 70cm breadth is 5cm and height 3cm
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GIVEN :-
- Length of the cuboid = 7 cm
- Breadth of the cuboid = 5 cm
- Height of the cuboid = 3 cm
TO FIND :-
- Base area of the cuboid
- Area of vertical surfaces of the cuboid
- Total surface area of cuboid .
SOLUTION :-
- Base area of cuboid = l b
= 7 × 5
= 35 cm²
- Vertical surface area of cuboid = 2h(l + b)
= 2 × 3 × ( 7 + 5 )
= 6 × 12
= 72 cm ²
- Total surface area of the cuboid = 2 ( lb + bh + lh )
= 2 ( 7 × 5 + 5 × 3 + 7 × 3 )
= 2 ( 35 + 15 + 21 )
= 2 × 71
= 142 cm²
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