Area

Q.

Describe the method of finding the area of an irregular object such as the palm of your hand.

Q.

In the figure given below, PQSR is a square. Find the area of the unshaded region.

1. $100c{m}^2$

2. $200c{m}^2$

3. $300c{m}^2$

4. $400c{m}^2$

Q. Area is the measure of the extent of plane surface occupied by an object.

1. True
2. False

Q. The CGS unit of density is .

1. $kg{m}^{-3}$
2. $kgc{m}^{-3}$
3. $gc{m}^{-3}$

Q. Which of the following units express area of a surface?

1. Square metre
2. Kilometre
3. Metre
4. Cubic metre

Q. Area of a circle of radius 5 cm is

1. $60c{m}^2$
2. $78.5c{m}^2$
3. $50c{m}^2$
4. $42c{m}^2$

Q. Standard unit to measure area of an object is .

1. $m^2$
2. $\mathrm{ml}$
3. $m$
4. $m^3$

Q. The extent of surface enclosed by a closed figure is called its ________.

1. length
2. perimeter
3. area
4. volume

Q.

The area of the given figure (all dimensions in units) will be:

1. $60\text{sq. units}$
2. $36\text{sq. units}$
3. $46\text{sq. units}$
4. $63\text{sq. units}$

Q. there is a circular field of area of approximately 500 square metre .How can you find its area accurately by using a measuring tape​?
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Q. Find the area between two concentric circles of radii $4\text{cm}$ and $30\text{mm}$ respectively.

1. $12\pi {\text{cm}}^2$
2. $7\pi {\text{cm}}^2$
3. $25\pi {\text{cm}}^2$
4. $6\pi {\text{cm}}^2$

Q. Which of the following units express area of a surface?

1. Kilometre
2. Cubic metre
3. Metre
4. Square metre

Q. If the length and breadth of a box are 10 cm and 5 cm respectively, then its area is:

1. 40 sq. cm
2. 60 sq. cm
3. 80 sq. cm
4. 50 sq. cm