Operations on Area and Perimeter

Q.

What is the cost of fencing a rectangular field of length and breath 12 m x 15 m at ₹10 per m.

1. ₹520

2. ₹540

3. ₹560

4. ₹580

Q. Cost of fencing around a square field is ₹12000. If the cost of fencing per metre is ₹30, then find the area of the square field.

1. $10,000{\text{m}}^2$
2. $12,000{\text{m}}^2$
3. $5,000{\text{m}}^2$
4. None of the above

Q. What would be the cost of fencing a square field of side 10 m at the rate of ₹ 20 per metre?

1. ₹ 800
2. ₹ 700
3. ₹ 500
4. ₹ 600

Q. Each side of a square field is 10m. Find the cost of ploughing the field at the rate of ₹ 1.50 per m${}^2$.

1. ₹ 100
2. ₹ 250
3. ₹ 110
4. ₹ 150

Q.

One side of a square field $200m.$ Find the cost of levelling it if the rate of levelling is ₹ $0.30persquaremetre.$

Q.

What is the cost of cultivating a rectangular field 34 m long and 18 m wide at ₹4.50 per square metre?

1. ₹ 2547

2. ₹ 2475

3. ₹ 2745

4. ₹ 2754

Q.

Find the cost of ploughing a rectangular field whose length is 2 km and breadth is 1 km at the rate of ₹ 50 per square metre.

1. ₹ 10, 00, 00, 000

2. ₹ 1, 00, 00, 000

3. ₹ 10, 00, 000

4. ₹ 20, 00, 00, 000

Q. Two rectangular plots of length 40 m and width 20 m are as shown:

What is the cost of fencing the plots at ₹ 4 per metre?

1. ₹ 16000
2. ₹ 1600
3. ₹ 640
4. ₹ 6400

Q. What is the cost of painting a rectangular wall of $50{\text{cm}}^2$ at the cost of $₹100/{\text{cm}}^2$.

1. ₹ 5000
2. ₹ 4000
3. ₹ 3000
4. ₹ 2000

Q.

Find the cost of fencing a rectangular plot, $200m$ long and$75m40cm$ wide at a rate of Rs $5$ per metre . A $3m$ long opening is left at the entrance on one of the longer sides.

Q.

What will be the cost of wooden stick required to frame a square picture of side $\text{80 cm ?}$ The cost of wooden stick is $\text{50 paise}$ per $\text{cm.}$

Q. The volume of a fish tank is 75.6 liters. Find the width of the tank, if the length and the height of the tank are 60cm and 42cm, respectively.

1. 20 cm
2. 30 cm
3. 32 cm
4. 40 cm

Q. A public park that is 20 m long and 10 m wide has two square garden plots 8 m long. If the cost of laying the pavements in the remaining area of the public park costs ₹3.75 per sq. metre, what is the total cost of laying the pavements.

1. ₹ 750
2. ₹ 370
3. ₹ 190
4. ₹ 270

Q.

Karan wants to cover the floor of his room with lavish tiles. His room is square in shape with sides of 6 m. The shopkeeper told him that the area of each tile is 0.5 m². Can you tell how many tiles Karan should buy?

1. 108

2. 36

3. 72

4. 144

Q. What is the cost of cultivating a rectangular field 34 m long and 18 m wide at ₹4.50 per square metre?

1. ₹ 2475
2. ₹ 2547
3. ₹ 2745
4. ₹ 2754

Q. The cost of fencing a square field of perimeter 12 m at the rate of ₹20/m is ____.

1. ₹300
2. ₹320
3. ₹240
4. None of the above

Q. The length and breadth of a rectangular field are in the ratio $5:3$. If the cost of cultivating the field at $25$ paise per square metre is Rs. $6000$, find the perimeter of the field.

1. $560$ m
2. $160$ m
3. $700$ m
4. $640$ m

Q. A floor is 5 m long and 4 m wide. A square carpet of sides 3 m is laid on the floor. Find the area of the floor that is not carpeted.

Q. The perimeter of a rectangular field is $480$ metres and the ratio between the length and breadth is $5:3$; the area is:

1. $13.5m^2$
2. $1550m^2$
3. $155$ ares
4. $135$ ares