Advertisements
Advertisements
प्रश्न
Explain how you will measure the area of (i) a square (ii) a leaf?
Advertisements
उत्तर
The area of a square can be calculated by using the following formula:
i. Area of square of side l
= side x side
= l × l = L2.
ii. The area of a leaf is obtained by using a graph paper. A graph paper has small squares of each side 1 mm. The area of each big square is 1 cm2.
Procedure: Place the leaf on graph paper. Draw its outline on the paper and remove it. Now count the number of complete squares. To this add the number of incomplete squares which are half or more than half. Ignore the squares which are less than half. Thus,
Approximate area = (No. of complete squares + no. of half or more than half of incomplete squares) × area of one square.
APPEARS IN
संबंधित प्रश्न
The area of an irregular lamina is measured by using a ______.
Describe the method in steps to find the area of an irregular lamina using a graph paper.
Find the approximate area of an irregular lamina of which boundary line is drawn on the graph paper shown in following figure.
Select the correct alternative:
The amount of surface occupied by an object is called its __________.
Explain the term area of a surface.
Tick the most appropriate answer.
To measure the volume of an irregular shaped body, we use a
State if the following statement is true or false. Correct the statement if it is false.
The length of an irregular object can be found with the help of a graph paper.
Tick the most appropriate answer.
The region enclosed within the boundaries of a closed figure is known as its
State true or false. If false, correct the statement.
The region covered by the boundary of a plane figure is called its volume.
A circular disc has a radius 10 cm. Find the area of the disc in m2 (Use π = 3.14).
