Observing Length and Breadth of Rectangles of Squares Using Dot Grids

Q.

The value of expression ${12}^2\times 5^2$ is equal to

1. $3600$

2. $4200$

3. $4600$

4. $3200$

Q.

The value of expression $(1.8{)}^2\times (0.5{)}^2$ is

1. 81

2. 0.81

3. 0.081

4. 8.1

Q.

Observe the given rectangle

How many minimum numbers of rows or columns we need to add to make it a square.

1. 1 row

2. 1 column

3. 2 columns

4. 2 rows

Q.

Observe the given rectangle

what is the minimum number of balls we need to remove to make it a square?

1. 3

2. 6

3. 9

4. 12

Q.

Observe the given rectangle

How many minimum extra rows or columns, we need to remove to make it a square.

1. 1 row

2. 2 columns

3. 2 rows

4. 1 column

Q.

Which of the following correctly represents 338 as the product of its prime power?

1. $338=2^2\times {13}^2$

2. $338=2\times {13}^2$

3. $338=2^2\times 13$

4. $338=2^2\times {13}^3$

Q.

Observe the given rectangle

How many minimum extra dots we need to add and make it a square.

1. 10

2. 5

3. 6

4. 4

Q.

Observe the rectangle given below

If we rearrange the dots and make this rectangle a square, then what will be the side of that square.

1. 2

2. 4

3. 16

4. 8

Q.

Observe the rectangle given below

If we rearrange the dots and make this rectangle a square, then what will be the side of that square?

1. 18

2. 16

3. 6

4. 12

Q. The strength of the magnetic field in a solenoid can be increased by increasing ________.

1. the number of coil turns per unit length
2. the density of the coil material
3. the mass of the coil material
4. the electric current passing through the coil