Question

TRAIN YOUR BRAIN
A. Tick (v) the correct option.
1. The perimeter of the given figure is
3 cm
3 cm
c) 3 cm
3 cm
a) 6 cm
d) 12 cm
b) 9 cm
2. The perimeter of a rectangle whose length and breadth are 12 cm and 8 cm
respectively, is
a) 20 cm
b) 40 cm
c) 20 square cm
d) 40 square cm
3. The area of a square
of side 6 cm is
6x6 - Low
a) 36 cm
b) 24 cm
36 square cm d) 24 square cm
4. The perimeter of the given figure is 36 cm. Find the length of the missing
side of the given figure.
?
8 cm
7 cm
11 cm
a) 11 cm
b) 10 cm
c) 12 cm
d) 13 cm
5. The figure given below is made up of 1 cm squares. The area of the figure is
1 cm
1 cm
a) 8 square cm
b) 12 square cm c) 16 square cm
d) 20 square cm
B. Fill in the blanks.
1. The perimeter of a rectangle = _
2. The perimeter of a square =
3. The perimeter of an equilateral triangle of side 5 cm is
* (length + breadth)
x sides.
P. 5am
X
fiche​

Answer 1

A) 1) Perimeter of Triangle = Sum of sides = 3cm 3cm + 3cm = 9cm

2) Perimeter of Rectangle = 2(l+b) = 2×20 = 40cm

3) Area of square = (side) ² = 6² cm = 36 cm²

4) Perimeter of the figure - Given Value = 36cm- 26cm = 10cm

5) 8 cm²

B) a) Perimeter of Rectangle = 2(l+b)

b) Perimeter of Square = 4× side

c) 5 +5+5 cm = 15 cm