Question

Worked Examples
1. A carton box of length 40 cm, breadth 20 cm, and
height 30 cm has to be made from the cardboard
What is the area of the sheet required to make the box!
What will be the capacity of the box after it is made?​

Answer 1

Answer:

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Answer 2

Answer:

• Perimeter of a rectangle = 2 (length + breadth).

• Area of a rectangle = length × breadth.

• Perimeter of a square = 4 × side.

• Area of a square = side × side.

• Area of a triangle =

1

2 × Base × Corresponding Height.

• Area of a parallelogram = Base × Corresponding Height.

• Area of a circle = 2 r , where r is the radius.

• Area of a trapezium =

1

2 × (Sum of parallel sides) × Height.

• Area of a rhombus =

1

2 × Product of diagonals.

• Lateral surface area of a cube = 4 (side)2.

• Total surface area of a cube = 6 (side)2.

• Lateral surface area of a cuboid = 2 × height × (length + breadth).

• Total surface area of a cuboid = 2(lb + bh + hl).

• Lateral (curved) surface area of a cylinder = 2πrh.

• Total surface area of a cylinder = 2πr (r + h), where r is the radius

and h is the height.

Step-by-step explanation:

i think you should apply the given formulas and try it by own