Question

Q-6 Solve the following problems.

1) Perimeter of a square is 20 cm, then what will be the area of that

square.

2) A gate having dimensions 2 m X 1 m is in the wall of 3 m X 5 m. If

the cost of colouring is Rs. 100 per m2

, find the total cost of colouring

the wall.​

Answer 1

Answer:

1) 5 cm 2) ₹1300

Step-by-step explanation:

1) perimeter of square= 4× side

20 cm = 4 × side

20÷4 = side

5 cm = side

2) area to be colored= area of wall - area of gate

3×5 - 2×1

15 m square - 2 m square

= 13 m square

cost of colouring = ₹ 13×100 = ₹1300

Answer 2

Step-by-step explanation:

1) Perimeter of square = 20cm

4*side = 20cm

side = 5cm

Area of square = side*side

= 5*5

= 25 cm^2

2) Area of gate = 2*1

= 2m^2

Area of wall = 3*5

= 15m^2

Area of wall except gate = 15-2

= 13m^2

Cost of colouring of per m^2 = 100Rs.

Cost of colouring of 13m^2 = 13*100

= 1300Rs.