With each vertex of an equilateral .trianigle as centre a circle is drawn as shown in the picture. If the area of the triangle is `17300 sq_- cm`, what is the area of the shaded portion?
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In the picture below, O is the center of the circle and OABC is a rectangle OA =8c.m OC =15cm. Find the area of the shaded portion of the circle.

Consider the charges q,q, and -q placed at the vertices of an equilateral triangle as shown in the figure. What is the force on each charge? '(##VPU_HSS_PHY_XII_CO1_E01_007_Q01##)'

The figure shows three circles drawn with their centers on each vertex of an equilateral triangle' and passing through the other two vertices. Find the area of the region common to all three.

In the picture below, A B C D and A E F B are parallelograms. Area of paRallelogram ABCD is 18 sq.cm. What is the area of parallelogram AEFB?

A charged metallic sphere A is suspended by a nylon thread. Another charged metallic sphere B held by an insulating handle is brought close to 'A' such that the distance between their centres is 10cm as shown in the figure (a). The resulting repulsion of A is noted (for example, by shining a beam of light and measuring the deflection of its shadow on a screen). Spheres A and B are touched by uncharged spheres C and D respectively as shown in the fig (b). C and D are then removed and B is brought closer to A to a distance of 5.0cm between their centres as shoen in the fig(c). What is the expected repulsion of A on the basis of Coulomb's law? Spheres A and C and spheres B and D have identical sizes. Ignore the sizes of A and B in comparison to the separation between their centres. '(##VPU_HSS_PHY_XII_CO1_E01_005_Q01##)'