Sapling of gulmohar are planted on the boundary of a rectangular plot at a distance of 1 m from each other. There is a lawn PQRS in the ground as shown in the figure. Find the coordinates of S, taking R as origin.

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Question 5
The class X students of a secondary school in Krishinagar have been allotted a rectangular plot of land for their gardening activity. Saplings of Gulmohar are planted on the boundary at a distance of 1 m from each other. There is a triangular lawn in the plot as shown in the figure. The students are to sow the seeds of flowering plants on the remaining area of the plot.
(a) Taking A as origin, find the coordinates of the vertices of the triangle.
(b) What will be the coordinates of the vertices of triangle PQR if C is the origin.
(c) Also calculate the areas of the triangles in these cases. What do you observe?

The class X students of a secondary school in Krishinagar have been allotted a rectangular plot of land for their gardening activity. Saplings of Gulmohar are planted on the boundary at a distance of 1 m from each other. There is a triangular grassy lawn in the plot as shown in the following figure. The students are to sow seeds of flowering plants on the remaining area of the plot.

(i) Taking A as origin, find the coordinates of the vertices of the triangle.

(ii) What will be the coordinates of the vertices of Δ PQR if C is the origin?

Also calculate the areas of the triangles in these cases. What do you observe?

Q. The Class

X

students of a secondary school in Krishinagar have been allotted a rectangular plot of land for their gardening activity. Sapling of Gulmoharare planted on the boundary at a distance of

1

m from each other. There is a triangular grassy lawn in the plot as shown in the Fig. The students are to sow seeds of flowering plants on the remaining area of the plot.
(i) Taking

A

as origin, find the coordinates of the vertices of the triangle.
(ii) What will be the coordinates of the vertices of

Δ P Q R

C

is the origin?
Also calculate the areas of the triangles in these cases. What do you observe?

A rectangular plot of land measures 45m x 30m. A boundary wall of height 2.4 m is built all around the plot at a distance of 1 m from the plot. Find the area of the inner surface of the boundary wall.

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