A pit is dug 50 m long, 40 m broad and 7 m deep. The earth dug out is spread evenly on a plot of land 500 m × 400 m. The level of the plot rises by A. 0.56 m B. 0.07 m C. 0.25 m D. 0.36 m

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