Question

A triangular park has (5, 4), (0, 0) and (5, 0) vertices,

(i) Find the area of this park by plotting them on the graph.

(ii) If 10 plants can be planted in one square unit area. Then, how many plants can be planted in

the park. How is this beneficial to the society?

(iii) Write the coordinates of the point whose sign cannot be changed? What values in our life

this point indicates?

Answer 1

Answer:

Given : A triangular park has (5, 4), (0, 0) and (5, 0) vertices,

To find :

(i) Find the area of this park by plotting them on the graph.

(ii) If 10 plants can be planted in one square unit area. Then, how many plants can be planted in the park. How is this beneficial to the society?

(iii) Write the coordinates of the point whose sign cannot be changed? What values in our life  this point indicates

Solution :

i) We plot the points in the graph and joint them to make a triangle.

Refer the attached graph below.

In the graph the triangle form is a right angle triangle with base 5 unit and height 4 unit.

$Area=\frac{1}{2}\times base \times height$

$Area=\frac{1}{2}\times 5\times 4$

$Area=5\times 2$

$Area=10 unit^2$

ii) In 1 square unit number of plants to be planted is 10

In 10 square unit number of plants to be planted is 10×10=100

100 plants can be planted in  the park.

It is beneficial to the society because they provide us oxygen the source of living.

iii) The coordinates of the point whose sign cannot be changed is (0,0) because this value is the neutral value.

Answer 2

Step-by-step explanation:

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