Question

Please answer
1)A piece of a string is 48cm long. What will be the length of each side if the string is used to form:

a)a square b) an equilateral triangle c)a regular hexagon.

2) How many envelopes can be made out of a sheet of paper 125cm by 85cm supposing each envelope requires a piece of paper of size 17cm by 5cm?

3) Anil runs around a square field of side 60m four times. What distance does he cover? Vinay runs twice a rectangular with length field 180m and breadth 110m.What distance does he cover? Who covers more distance and by how much?

4)Find the length of the side of:

i)a square if the perimeter is 32cm

ii)an equilateral triangle if the perimeter is 18cm

iii)a regular pentagon if the perimeter is 45cm.

5) Find the perimeter of

i)the square with side length 8cm

ii) Equilateral triangle with side length 5cm

iii)the regular hexagon with side length 7cm.

6) The perimeter of a rectangle and square are same. If the length and breadth of the rectangle are 25 cm and 17 cm respectively, which figure has greater area and how much?

7) The cost of fencing a square field at Rs.15 per meter is Rs.360. Find the length of each side of the field.

8) Ranbir bought a rectangular field of area 24000 square metres and width 120 m. He wants to fence it with two rounds of wire. Find the length of wire that will be required to fence the field.

9) A rectangular sheet of paper with length 20cm and breadth 10cm is to be cut into small squares of side 5cm each.

a. Find the area of one square piece?

b. Find the area of the rectangular sheet?

c. How many square pieces will be obtained?

10) Find the area and perimeter of a rectangle whose length and breadth are 52cm and 36 cm respectively

Answer 1

Answer:

For square 12cm

triangle 16cm

hexa. 9.6cm