Find the square root of the following numbers in decimal form:

84.8241

Find the square root of 5776 and 7921 by division method.

A gardener has 1000 plants. He wants to plant these in such a way that the numberof rows and the number of columns remain same. Find the minimum number of plants he needs more for this

Find the length of a side of a square playground whose area is equal to the area of a rectangular field of dimensions 72m and 338 m.

Find the greatest number of 5 digits which is a perfect square.