Question

Find the perimeter and area of a plank of size 300 cm * 30 cm​

Answer 1

Given :

• Length of the plank = 300 cm.
• Breadth of the plank = 30 cm.

⠀

To Find :

• The perimeter and area of the plank.

⠀

Solution :

Perimeter of the plank :

`\: {\qquad \dashrightarrow \sf 2 * (Length + Breadth) }`

`\: {\qquad \dashrightarrow \sf{{ 2 * (300 + 30) \: cm }}}`

`\: {\qquad \dashrightarrow \sf{{ 2 * (330) \: cm }}}`

`\: {\qquad \dashrightarrow \sf{{ 600 \: cm }}}`

⠀

Area of the plank :

`\: {\qquad \dashrightarrow \sf (Length * Breadth) }`

`\: {\qquad \dashrightarrow \sf (330 * 30) \: {cm}^(2) }`

`\: {\qquad \dashrightarrow \sf 9 000 \: {cm}^(2) }`

⠀

Answer 2

Explanation:

Given :-

• Length = 300cm
• Width = 30 cm

To find :-

• Perimeter and area of plank

Solution :-

Perimeter of rectangular plank = 2(L+W)

putting the values,

perimeter = 2(300+30)cm

⇝660 cm

Area of rectangular plank = L × W

putting the known values ,

Area = 300 × 30 cm²

⇝ 9000cm²