Chapter 10, Lesson 9


10-9.A use area formulas for triangles, quadrilaterals, and circles
Find the area of each figure.
a. right triangle: hypotenuse = 34 in., one leg = 16 in.
b. isosceles trapezoid: bases = 8 cm and 24 cm, leg = 17 cm, altitude = 15 cm
c. circle: diameter = ft; answer to the nearest tenth.

10-9.B solve two-step equations
Solve: 116 + 17x = 830