Advertisements
Advertisements
प्रश्न
A wire is in the shape of a rectangle. Its length is 40 cm and breadth is 22 cm. 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?
Advertisements
उत्तर
Perimeter of rectangle = Perimeter of square
2 (Length + Breadth) = 4 × Side
2 (40 + 22) = 4 × Side
2 × 62 = 4 × Side
Side = 124/4 = 31 cm
Area of rectangle = 40 × 22 = 880 cm2
Area of square = (Side)2 = 31 × 31 = 961 cm2
Therefore, the square-shaped wire encloses more area
APPEARS IN
संबंधित प्रश्न
The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area.
Find the area of a square plot of side 8 m.
The length of the side of the square is given below. Find its area.
6 cm
Look at these interesting stamps.
Which stamp has the biggest area? How many squares of side 1 cm does this stamp cover? How much is the area of the biggest stamp? square cm.
Amita wants to make rectangular cards measuring 8 cm × 5 cm. She has a square chart paper of side 60 cm. How many complete cards can she make from this chart? What area of the chart paper will be left?
Find the area of the square whose sides are:
10 cm
Five square flower beds each side 1 m are dug on a piece of land 5 m long and 4 m wide. What is the area of the remaining part of the land?
Rani bought a new field that is next to one she already owns (see figure). This field is in the shape of a square of side 70 m. She makes a semi-circular lawn of maximum area in this field.
- Find the perimeter of the lawn.
- Find the area of the square field excluding the lawn.
Find the area of the shaded portion in a circle whose radius is 7 cm (see figure).
[Hint: Four right-angled triangles joined at right angles to form a square]
Find the area of a square field with side 14 cm.
