A teak wood log is cut first in the form of a cuboid of length 2.3m, width 0.75m and a certain thickness. Its volume is 1.104m3 . How many rectangular planks of size 2.3m x 0.75m x 0.04m can be cut from the cuboid?

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