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Textbooks

NCERT Mathematics Std 7

Perimeter and Area

Chapter 11 : Perimeter and Area

The length and breadth of a rectangular piece of land are

500 m

and

300 m

respectively. Find its area.

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The length and breadth of a rectangular piece of land are

500 m

and

300 m

respectively. Find the cost of the land, if

1

m^{2}

of the land costs

R s . 10, 000.

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Q. Find the area of a square park whose perimeter is

320 m .

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Q. Find the breadth of a rectangular plot of land, if its area is

440 m^{2}

and the length is

22 m .

Also find its perimeter.

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Q. The perimeter of a rectangular sheet is

100 c m .

If the length is

35 c m,

find its breadth. Also find the area.

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Q. The area of a square park is the same as of a rectangular park. If the side of the square park is

60 m

and the length of the rectangular park is

90 m,

find the breadth of the rectangular park.

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Q. A wire is in the shape of a rectangle. Its length is

40 c m

and breadth is

22 c m .

If the same wire is rebent in the shape of a square, what will be the measure of each side. Also find which shape encloses more area?

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Q. The perimeter of a rectangle is

130 c m .

If the breadth of the rectangle is

30 c m,

find its length. Also, find the area of the rectangle.

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Q. A door of length

2 m

and breadth

1 m

is fitted in a wall. The length of the wall is

4.5 m

and the breadth is

3.6 m .

Find the cost of white washing the wall, if the rate of white washing the wall is

R s .20

per

m^{2} .

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Q. PQRS is a parallelogram. QM is the perpendicular height from Q to SR and QN is the perpendicular height from Q to PS. If SR

= 12

cm and QM

= 7.6

cm then find the area of the parallelogram PQRS.

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Q. Find the missing values:

S.No.	Base	Height	Area of the parallelogram
a.	$20$ cm		$246$ $c m^{2}$
b.		$15$ cm	$154.5$ $c m^{2}$
c.		$84$ cm	$48.72$ $c m^{2}$
d.	$15.6$ cm		$16.38$ $c m^{2}$

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Q. Find the missing values:

Base	Height	Area of triangle
$15$ cm	______	$87 c m^{2}$
________	$31.4$ mm	$1256$ $m m^{2}$
$22$ cm	_______	$170.5$ $c m^{2}$ .

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Find the area of the following parallelogram.

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Q. Find the area of the following parallelogram.

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Q. Find the area of the following parallelogram.

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Find the area of the parallelogram whose base and height are given as shown in the figure.

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Q. Find the area of the following triangle.

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Q. Find the area of the following triangle.

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Find the area of the above triangle.

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Q. Find the area of the following triangle.

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