Question

find the total surface area and lateral surface area of cuboid whose length breadth and hight is 20cm 15cm and 18cm.​

Answer 1

$\huge\tt{\underline\green{Answer}:-}$

The dimensions of a cuboid are given as follows:

• Length of cuboid = 20 cm

• Breadth of cuboid = 15 cm

• Height of cuboid = 18 cm

✯ Find the Total Surface area and the Lateral Surface area.

$\underline\red{Solution}:-$

The total surface area is given as

• Total surface area of cuboid :-

:•⟹2(length×breadth+breadth×height+height× length)

:•⟹ 2( 20×15 + 15×18 + 18×20 )

:•⟹ 2( 300 + 270 + 360 )

:•⟹ 2×930

:•⟹ 1860 Ans.

Therefore, Total surface area of cuboid= 1860 cm

Also, the lateral surface area of cuboid :-

:•⟹ 2 × height(Length +Breadth)

:•⟹ 2 × 18 (20 + 15)

:•⟹ 1260 Ans.

Therefore, Lateral surface area of cuboid = 1260 cm²

Answer 2

Answer

:−

The dimensions of a cuboid are given as follows:

• Length of cuboid = 20 cm

• Breadth of cuboid = 15 cm

• Height of cuboid = 18 cm

✯ Find the Total Surface area and the Lateral Surface area.

Solution

:−

The total surface area is given as

• Total surface area of cuboid :-

:•⟹2(length×breadth+breadth×height+height× length)

:•⟹ 2( 20×15 + 15×18 + 18×20 )

:•⟹ 2( 300 + 270 + 360 )

:•⟹ 2×930

:•⟹ 1860 Ans.

Therefore, Total surface area of cuboid= 1860 cm

Also, the lateral surface area of cuboid :-

:•⟹ 2 × height(Length +Breadth)

:•⟹ 2 × 18 (20 + 15)

:•⟹ 1260 Ans.

Therefore, Lateral surface area of cuboid = 1260 cm²