From a point P outside the circle, two tangents are drawn to the circle to intersect the circle in points Q and R, respectively. It is found that PQ = PR = 20 cm. The radius of circle is 5 cm. If M is centre of circle, then find the area of quadrilateral PQMR (in square cm)?
1). 80 cm2
2). 72 cm2
3). 100 cm2
4). 108 cm2
The side of a square is increased by 18 percent. Calculate the change in the area of the square?
1). 40% increase
2). 39.24% increase
3). 35% decrease
4). 39.24% decrease
here is a rectangular tank of length 160 m and breadth 115 m in a circular field, if the area of the land portion of the field is 30000 m2, what is the radius(approximately) of the field $\(\left( {Take\;\pi = \frac{{22}}{7}} \right)\)$
1). 110 m
2). 132 m
3). 124 m
4). 147 m
If base of a parallelogram is 3 m more than adjacent side of a parallelogram and product of length of adjacent sides is 108 m. If the area of parallelogram is 72 m2, find height of the parallelogram?
The sides of a triangle are in the ratio of \(\frac{1}{2}:\frac{1}{3}:\frac{1}{4}.\) If the perimeter is 78 cm, then the length of the smallest side is