Question

* Numerical problema
Find the area of a circle of radius 7 em
2. The length of a school playground is
1ao m and its breadth is 105 m Find the
area of playground in my Express your
answer in hectare too.
The diameter of a coin is 4.2 cm Find its
surface area
A overhead water tank is 3 m long
2 m wide. It contains water upto a he
of 1.2 m. Find the volume of w
contained in the tank in (a) m, and (b
wooden log of diameter 84 cm has​

Answer 1

Answer:

154 cm

Step-by-step explanation:

I can answer only the 1st question

Radius = 7cm

Area of the circle = πr^2

= 22/7*7*7

= 154 cm

Hope it helps you....

Answer 2

AREA = LENGTH X BREATH

HECTARE =10^4 m^2

Step-by-step explanation:

AREA =180x105=1890m^2 and in hectare 1890 x 10^-4 hec

therefore 0.189 hec is your required answer.

Please mark as brilliant.