Question

1. Find the area of a rectangular garden of length 350m and breadth 180m.
2. Find the area of a square plot ofside is 125 m.
3. Find the area of a parallelogram with base 16 cm and height 11cm.
4. Find the area of a square whose perimeter is 520 m.
5. Find the height of a triangle with base 12 cm and area 360cm?
6. A path of 5 metres wide runs along and outside a square park of side 100 metres. Find the area of the
path. Also find the cost of cementing it at the rate of 125 per m
7. TWO Windows of length 1m and breadth 1m is fitted in a wall. The length of the wall is 4 m and the Dream
is 3 m, find the cost of white washing the wall, if the rate of white washing the wall is 7 15 per me
8. The length and breadth of a rectangular plot are in the ratio 2:1. If its perimeter is
180 m, find the length and breadth.
9. Find the
circumference and area of the circle with diameter 28cm.
10. Find the
perimeter and area of the adjoining figure which is a semicircle
including
the diameter.
20cm​

Answer 1

Answer:

1. 63000 metre square

2.15625 metre square

3.176 centimeter square

4.16900 metre square

5.60 cm

Answer 2

(1.) Rectangular garden:
Length = 350m
Breath = 180m

Area = length x breath
= 350 x 180
=63,000 sq.m

(2.) Area of square plot = side x side
= 125 x 125
= 15,625 sq.m

(3.) Area of parellelogram
= base x height
= 16 x 11
= 176 sq.m

(4.) Square: perimeter = 520m
Side = ?
Perimeter of square = 4 x side
520 = 4 x side
520/4 = side
Side = 130m
Area of square = side x side
= 130 x 130
= 16,900 sq.m

(5.) Area of triangle = 1/2 x base x height
360 = 1/2 x 12 x height
360/6 = height
.: Height = 60m

(9.) Circumference = 22/7 x 28
= 88cm
Radius = d/2 = 28/2 = 14cm
Area of circle = 22/7 x 14 x 14
= 616 sq.cm