Triangle P Q R is an isosceles triangle with the coordinates P (2, 3), Q (5,10), and R (8,3). What is the area of triangle P Q R? A. 15 units^2
B. 21 units^2
C. 30 units^2
D. 42 units^2
E. 65 units^2

Jack lives on a farm and has a large backyard. the area of his rectangular backyard is of a square mile. if the width of the yard is of a mile, what fraction of a mile is the length of the rectangular backyard?

The area of a rectangle is 54x^9y^8 square yards.if the length of the rectangle is 6x^3y^4 yards,which expression represents the width of the rectangle in yards

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.