Quiz 29, Unit 8 (8.18 - 8.29) Flashcards Preview

8th Math - Pre-Algebra > Quiz 29, Unit 8 (8.18 - 8.29) > Flashcards

Flashcards in Quiz 29, Unit 8 (8.18 - 8.29) Deck (10):
1

area of a circle

 

A = pir2

2

perimeter of a square

 

P = 4s

3

area of a triangle

 

A = 1/2bh

4

circumference of a circle using the diameter

 

C = pid

5

perimeter of a rectangle

 

P = 2l + 2w

6

area of a trapezoid

 

         h(b1 + b2)

A =  ______

  2

7

area of a rectangle

 

A = lw

8

Area of a square

 

A = s2

9

Find the area of a triangle with an 11 inch base and a 6 inch height.

 

A = 1/2 bh

A = 1/2*11*6

A = 33 sq. in.

10

Find the circumference of a circle with a 15 inch radius.

 

C = pid    or C = pi2r

C = 3.14 * 2 * 15

C = 94.2 in.