Advertisements
Advertisements
प्रश्न
A path of uniform width, 3 m, runs around the outside of a square field of side 21 m. Find the area of the path.
Advertisements
उत्तर
According to the given information the figure will be as shown alongside.
Clearly, the length of the square field excluding path = 21 m.
Area of the square side excluding the path = 21 x 21 = 441 m2
Again, length of the square field including the path = 21 + 3 + 3 = 27 m
Area of the square field including the path = 27 x 27 = 729 m2
Area of the path = 729 – 441 = 288 m2
APPEARS IN
संबंधित प्रश्न
A wire, when bent in the form of a square encloses an area of 484 cm2. Find :
(i) one side of the square ;
(ii) length of the wire ;
(iii) the largest area enclosed; if the same wire is bent to form a circle.
A piece of wire is 36 cm long. What will be the length of each side if we form a square
1 sq m = ______ sq cm.
Tahir measured the distance around a square field as 200 rods (lathi). Later he found that the length of this rod was 140 cm. Find the side of this field in metres.
Bajinder runs ten times around a square track and covers 4 km. Find the length of the track.
In the following figure, each square is of unit length
- What is the perimeter of the rectangle ABCD?
- What is the area of the rectangle ABCD?
- Divide this rectangle into ten parts of equal area by shading squares. (Two parts of equal area are shown here)
- Find the perimeter of each part which you have divided. Are they all equal?
The perimeter of a square garden is 48 m. A small flower bed covers 18 sq m area inside this garden. What is the area of the garden that is not covered by the flower bed? What fractional part of the garden is covered by flower bed? Find the ratio of the area covered by the flower bed and the remaining area.
Find the side of the square whose perimeter is 20 m.
In the following figure, perimeter of (ii) is 18 units.
 |
| (ii) |
A square field has a side of 15 m. What is its perimeter?
