Name _________________________________
Unit 9 – Measurement
HW #80: Perimeter and Area
Date ___________
Math 8H
1) A rectangle has a width of 5 mm and a diagonal of 13 mm. Find the perimeter.
2) The circumference of a circle is 36 π . What is the area in terms of
π?
3) The radius of a circle is 6. Find the perimeter of a quarter-circle. Leave your answer in terms of
4) The perimeter of a square field is 12 cm. Find its area.
5) If the area of a circle is 196 π , then what is the circumference in terms of
π?
6) What is the circumference of a circle whose diameter is 15 feet to the nearest tenth?
7) What is the perimeter of a square whose side measures 8 centimeters?
8) What is the circumference of a circle whose radius is 6.5 inches to the nearest tenth?
9) The figure below consists of a rectangle and two semi-circles. Find the perimeter in terms of
π.
π.
10) The perimeter of a triangle is 29 millimeters. The length of the first side is twice the length of the second
side. The length of the third side is 5 more than the length of the second side. Find the side lengths of the
triangle. Then, classify the triangle by its side lengths.
11) The perimeter of a triangular window is 141 inches. The ratio of the side lengths of the window is 11:18:18.
What are the side lengths of the window?
12) Consider the diagram below.
a) What is the area of rectangle ABCD?
b) What is the area of trapezoid ABED?
13) Simplify each expression.
a)
72
b)
7 48
c)
20
64
d)
3
343
e)
625
14) The hypotenuse of a right triangle is 14 cm. One leg is 8 cm. What is the length of the other leg in simplest
radical form?
Review: State whether each is an example of a function.
a) {(3, 5), (-4, 8), (3, 9)}
b) y = x + 5
c)