Area of Mixed Shapes

Q.

Question 5

From a circular sheet of radius 4 cm, a circle of radius 3 cm is removed. Find the area of the remaining sheet $(Take\pi =3.14)$

Q. A train travelling at $60$ km per hour leaves station A at $3.00$ p.m and another train leaves the same station in the same direction at $5.00$ p.m at the speed of $75$ km per hour. How many kilometers from station A will the two train be together ?

1. $500$ km
2. $520$ km
3. $600$ km
4. $720$ km

Q. Find the areas(in $c{m}^2$) of shaded regions. [Take $\pi =\frac{22}{7}$]

1. $\frac{49}{2}$
2. $\frac{35}{2}$
3. $\frac{119}{4}$