Advertisements
Advertisements
Question
Find the approximate area of an irregular lamina of which boundary line is drawn on the graph paper shown in following figure.
Advertisements
Solution
From figure, the number of complete squares = 11
The number of squares more than half = 9
∴ Total number of squares = 11 + 9 = 20
∴ Area of the 1 square = 1 cm × 1cm = 1 cm2
∴ Area of 20 squares = 20 × 1 cm2 = 20 cm2
∴ Approximate area of irregular lamina = 20 cm2
APPEARS IN
RELATED QUESTIONS
The area of an irregular lamina is measured by using a ______.
Write true or false.
The area can be expressed as the product of length of two sides.
Explain the term area of a surface.
Explain how you will measure the area of (i) a square (ii) a leaf?
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.
Find the area of these leaves, where 1 square on the graph paper represents 1 cm2.
Tick the most appropriate answer.
The region enclosed within the boundaries of a closed figure is known as its
A circular disc has a radius 10 cm. Find the area of the disc in m2 (Use π = 3.14).
The dimension of a school playground is 800 m × 500 m. Find the area of the ground.
