Embibe Experts Solutions for Chapter: Areas Related to Circles, Exercise 1: Haryana Board-2018

Length of an arc of a sector of angle $\theta$ of a circle with radius $r$ will be:

Find the cost of ploughing the circular field having diameter $10$ meter and rate of ploughing is $₨.1.50$ per square meter.

Find the area of a sector of a circle of radius $6 \mathrm{cm}$, if the angle of the sector is ${60}^o$.

Find the circumference of a circle whose area is $6.16 {\mathrm{cm}}^2$.

If the angle of sector is $\theta$ then the formula for area of minor sector will be

The cost of fencing a circular field at the rate of $₹24$ per metre is $₹5280$. The field is to be ploughed at the rate of $₹0.50$ per ${\mathrm{m}}^2$. If the cost of ploughing the field is $₹k$, find $k$. (Use $\mathrm{\pi }=\frac{22}{7}$)