Point P is the exterior of the circle with center O and radius is 15 units. A tangent is drawn from the point P that touches the circle at T. if PT is 8 units, then OP is: A) 7 units B) 13 units C) 17 units D) 23 units

In the figure (not to scale) AB = CD, angle DAP = angle DPA and A,B,C,D are concycli. If angle ADC = 80°, then find angle ACD.

Solve : 2^(x+2)+2^(x-1)=9

Volume of a Cylinder

What length of tarpaulin 3m wide will be required to make conical tent of height 8m and base radius 6m ? Assume that the extra length of material that will be required for stitching and wastage in cutting is approximately 20cm ( Use pi= 3.14)

Find the square of: 2a +b