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8. A horse is tied to a peg at one corner of a square shaped grass field of side 15 m by means of a 5 m long rope (see Fig.). Find

  (i) the area of that part of the field in which the horse can graze.

                                      

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The part grazed by the horse is given by     =     Area of sector                                                                   

                                                      Area\ =\ \frac{\Theta}{360^{\circ}}\ \times \pi r^2

                                                                 =\ \frac{90^{\circ}}{360^{\circ}}\ \times \pi \times 5^2

                                                                  =\ 19.62\ m^2             

Posted by

Devendra Khairwa

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