Question

3 cm
4 cm
14cm
3 m
3 m
3 m
2 cm
3. Find the length of each of the equal sides of the isosceles triangle, if the
perimeter and unequal side are :
(i) Perimeter = 30 cm, unequal side = 8 cm
(i) Perimeter = 55 cm, unequal side = 15 cm
4. A rectangular field is 50 m x 40 m. Ramesh goes 20 times around it. How much
distance does he cover ?
5. A rectangular field is 90 m by 70 m. A man walks around it at the rate of 4 km
per hour. What time will he take in making 5 rounds ?

5. Find the perimeter of the rectangle whose length is 70 cm and breadth is 30
. A piece of wire is 96 cm long. What will be the length of each side, if the strin
is used to form:
(i) a square ? (it) an equilateral triangle? (i) a regular hexagon
Two sides of a triangle are 13 cm and 18 cm. The perimeter of triangle is 48
What is the third side ?
The perimeter of a triangle is 100 cm. If two sides are of 35 em and 30 cm.​

Answer 1

Answer:

4. perimeter of rectangle = 2 ×( l+b)

= 2×(50+40)m

= 2×90m

= 180m

Ramesh covered distance = 180×20

= 3600m answer