Geometry 10-1 and 10-2 - Composite Area & Perimeter

1.

Triangle Parallelogram

______ __________

A = 1/2bh A = bh

A = 1/2(18)(20) A = 20(10)

A = 180 A = 200

A = 380

2.

Rect. A Rect. B Rect. C

______ ______ ______

A = bh A = bh A = bh

A = (8)(16) A = (6)(2) A = (4)(18)

A = 48 A = 72 A = 72

A = 192

3.

Triangle Semicircle

_______ _________

A = 1/2bh A = πr^2/2

A = 1/2(13)(20) A = π(7.5)^2/2

A = 150 A = 88.36

A = 5

A = 93.36

4. (omit)

5.

Rect. Triangle

______ ______

A = bh A = 1/2bh

A = (7)(6) A = 1/2(5)(3)

A = 42 A = 7.5

A = 49.5

6.

Rect. A Rect. B

______ _______

A = bh A = bh

A = (15)(12) A = (27)(9)

A = 180 A = 243

A = 423

7.

Rect. Triangle A Triangle B

_____ _______ _______

A = bh A = 1/2bh A = 1/2bh

A = (7)(6) A = 1/2(3) A = 1/2(2)(2)

A = 42 A = 6 A = 2

A = 42 - (6+2)

A = 34

8.

Rect.

A = 16(10)

A = 160

A = 8(3)

A = 24

136

9.

Triangle Circle

______ _____

A = 1/2bh A=π r^2

A = 1/2(12)(16) A = π (10)^2

A = 96 A = 314.16

A = 218.16

10.

Rect. Circle

_____ _____

A = bh A = π^2