Perimeter of closed figures | Mensuration | Assessment | English | Grade 6

The distance covered along the boundary of a closed figure is called ________

• Area

• Volume

• Perimeter

• Length

Perimeter of a polygon can be given as the _______ of its all sides.

• Product

• Division

• Difference

• Sum

Perimeter of the given figure is _____.

• 16 cm

• 28 cm

• 25 cm

• 24 cm

Answer explanation

Option 2 is correct as perimeter of the pentagon is the sum of all its sides. Hence 5 cm + 7 cm + 4 cm + 7 cm + 5 cm = 28 cm

Perimeter of the given figure is _____.

• 30 cm

• 22 cm

• 27 cm

• 25 cm

Answer explanation

Option 1 is correct as perimeter is sum of all sides hence 3 cm + 5 cm + 4 cm + 3 cm + 7 cm + 8 cm = 30 cm

If the perimeter of the given figure is 32 m, then what is the length of the unknown side?

• 5 m

• 3 m

• 4 m

• 2 m

Answer explanation

Let the length of the unknown side be x. So, 32 = 9 + 5 + 14 + x 32 = 28 + x x = 32 - 28 x = 4 So, length of the unknown side is 4m. So, option 3 is correct.

Reena wants to put a lace border on the given cloth. What is the required length of the lace?

• 20 cm

• 24 cm

• 21 cm

• 22 cm

Answer explanation

Option 2 is correct as the lace require for Reena is equal to the perimeter of the cloth. Hence, perimeter of cloth = 3 cm + 4 cm + 5 cm + 6 cm + 6 cm = 24 cm

Rohit fenced each side of his farm as shown in the figure. If he spent ₹ 20,000 as the total cost, then what is the cost of fencing per metre?

• ₹ 450

• ₹ 550

• ₹ 470

• ₹ 500

Answer explanation

Perimeter of the farm = 3m + 5m + 12m + 3m + 5m + 12m = 40 m The cost of fencing per metre = total amount spent on fencing/perimeter of the farm Hence, the cost of fencing per metre = 20000/ 40 = ₹500 So, option 4 is correct.