In a circle with radius $7\,cm ,$ the area of a minor sector can be $\ldots \ldots \ldots \ldots cm ^{2}$.
$150$
$105$
$88$
$55$
In the adjotning flgure, $PS$ is diemeter of a circle and $PS$ $=12$. $P Q=Q R=R S$ Semicircles are drawn with dinmeter $\overline{\text { PQ }}$ and $\overline{QS}$. Find the perimeter and the area Find the perimeter and the arce of the shaded region. $(\pi=3.14)$
It is proposed to build a single circular park equal in area to the sum of areas of two circular parks of diameters $16\, m$ and $12 \,m$ in a locality. The radius of the new park would be (in $m$)
Is it true to say that area of a segment of a circle is less than the area of its corresponding sector? Why?
In a circle with radius $8.4 \,cm ,$ two radii are perpendicular to each other. The area of the minor sector formed by these radii is $\ldots \ldots \ldots cm ^{2}$.
In $Fig.$, a square is inscribed in a circle of diameter $d$ and another square is circumscribing the circle. Is the area of the outer square four times the area of the inner square? Give reasons for your answer.