Geometry-Area-Chapter Test-Shapes to Formulas

Question 1

Rectangle

Answer 1

Area=base x hieght

Question 2

Circle

Answer 2

Area=pi x (radius squared)

Question 3

Kite

Answer 3

Area=1/2 diagonal 1 x diagonal 2

Question 4

Parallelogram

Answer 4

Area=base x hieght

Question 5

Trapezoid

Answer 5

Area= 1/2 x (base 1 + base 2) x hieght

Question 6

Triangle

Answer 6

Area= 1/2 base x hieght

Question 7

Regular Polygon

Answer 7

Area= (number of sides) x (apothem) x (length of each side)
over 2
Or
Area= Perimeter x apothem
over 2

Question 8

Rectangular Prism

Answer 8

Surface Area= 2(length x width) x 2(width x height) x 2(length x height)
Not A=lwh

Question 9

Cylinder

Answer 9

Surface Area= 2(pi)(radius squared) + 2(pi)(radius)(height)

Question 10

Pyramid

Answer 10

Surface Area= 1/2 base x lateral height x number of triangles x Base
Note: Substitute formula for Base shape where Base is
Note: If true height is given, not lateral height, then use that and the apothem and the pythagorean theorem to find lateral height.

Question 11

Cone

Answer 11

Surface Area= pi(radius squared) + pi(radius)(lateral height)

Question 12

Sector

Answer 12

region between two radii and an arc

Area=arc measure/360 x pi(radius squared)

Question 13

Segment

Answer 13

region between a chord and an arc of a circle

Area=(arc measure/360 x pi(radius squared)) - (1/2 chord length or base x height)

Question 14

Annulus

Answer 14

region between two concentric circles

Area= pi(bigger Radius squared) - pi(smaller radius squared)

Question 15

Square

Answer 15

Area=side squared

Question 16

Circumference

Answer 16

C=pi x diameter
Or C=2 x pi x radius
Or C=tau x radius

Question 17

What formula is Katie not going to use to find the surface area of a rectangular prism?

Answer 17

Volume of a rectangular prism
NOOOO length x width x height
NOOOOOOOOOOOOOOOOO