Find the rational number with decimal wxpansion of 0.999
in sum 4th of part 8th of exercise 2.5 how you can write 36 is multiple to 144a square +108ab square
a 35 cm long metal pipe has external and internal diameter respectively as 12 cm and 10 cm. How to find the weight of the metal used if the metal weighs 10gm per sq.cm