Question

MATHS: 11. Write the
formula for area and
perimeter of a square &
rectangle
2. Find the area and
perimeter of the
following
(i) Square of side 5cm
(ii) Rectangle with
L= 4cm, b= 3cm
3. Write the formula
for area &
circumference of a
circle and also find
them with radius 7cm.​

Answer 1

Step-by-step explanation:

1.

area of square = square of side

perimeter of square = 4( side)

area of rectangle = l*b

perimeter of rectangle =2(l+b)

2.

area of square with side 5 cm = 5^2 = 25 cm^2

perimeter of square with side 5 cm =4*5 =20 cm

area of rectangle with l= 4 and b = 3 is = 4*3 = 12cm^2

perimeter = 2(4+3) = 14 cm

3.

area of circle = π*(r)^2

circumference of circle = 2*π*r

for a circle with radius 7 cm

area = 49 π

circumference= 14π