What is a circumference of a circle with a. Radius of 50 Feet A) 25
B)2500
C)100
D)50

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Find the nonpermissible replacement for binthis expression.b2/5b +5