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A quick review of area formulas and why they work. #geometry #area
Flashcards
23 cards
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Practice quiz
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Questions
23
Answers
1
What is the formula for Surface Area of a prism?
2B + Ph
Bh
Bh/3
length x width x height
2
What is the formula for the area of a sector of a circle?
(arco / 360o)x dπ
(arco / 360o)x πr2
πr2
(arco / 360o)x 2πr
3
A triangle's area formula is 1/2*base* height because....
2 congruent triangles can make a rectangle of area b*h.
the Math Gods declared it so.
2 congruent triangles can make a kite of area b*h.
2 congruent triangles can make a parallelogram of area b*h.
4
The area of a circle is
base x height
πr2
dπ
2πr
5
What is the formula for Slope of a line?
√(x - x)2 + (y - y)2
(y2 - y1) / (x2 - x1)
(x - h)2 + (y - k)2 = r2
1/2(x1 + x2), 1/2(y1 + y2)
6
What is the Acronym to remember the Trigonometric Ratios?
Soh Cah Toa
Sah Coh Toa
Soa Cah Toh
Soh Coa Tah
7
What is the formula for Volume of a Cylinder?
πr2
2πr2 + 2πrl
πr2 x h
2πr2 + 2πrh
8
The area of a rectangle is...
diagonal*diagonal
base x height / 2
width*length
base*height
9
What is pi?
A constant relating a circle's circumference to its diameter
A tasty dessert (strawberry is the best)
3.1415926535897932384626433832795028841971693993751058209749
A Greek letter (π)
10
What is the formula for the Volume of a Cone?
1/2 Pl + B
πrl + πr2
1/3 B x h
1/3 π2 h
11
What is the formula for Surface Area of a Cylinder?
πr2 x h
2πr2 + 2πrh
2πr2 + 2πrl
πr2
12
What is the formula for the Surface Area of a Pyramid?
πrl + πr2
1/3 B x h
1/3 π2 h
1/2 Pl + B
13
What is the formula for the Surface Area of a Cone?
1/2 Pl + B
πrl + πr2
1/3 π2 h
1/3 B x h
14
What is the formula for the length of an arc?
πr2
(arco / 360o)x 2πr
(arco / 360o)x dπ
(arco / 360o)x πr2
15
What is the formula for volume of a prism?
Bh/3
length x width x height
2B + Ph
Bh
16
What is the formula for the Volume of a Sphere?
πr2
4πr2
4/3πr3
4/3πr2
17
What is the formula for Density
D / V = M
M / D = V
D x V = M
D x M = V
18
What is the formula for midpoint of a line segment?
(x - h)2 + (y - k)2 = r2
1/2(x1 + x2), 1/2(y1 + y2)
√(x - x)2 + (y - y)2
(y2 - y1) / (x2 - x1)
19
What is the formula for the Volume of a Pyramid?
1/3 B x h
1/2 Pl + B
1/3 π2 h
πrl + πr2
20
What is the formula for an Equation of a Circle
(y2 - y1) / (x2 - x1)
1/2(x1 + x2), 1/2(y1 + y2)
√(x - x)2 + (y - y)2
(x - h)2 + (y - k)2 = r2
21
What is the formula for the Surface Area of a Sphere?
4πr2
πr2
4/3πr3
4/3πr2
22
What is the formula for distance of a line segment?
(y2 - y1) / (x2 - x1)
√(x - x)2 + (y - y)2
(x - h)2 + (y - k)2 = r2
1/2(x1 + x2), 1/2(y1 + y2)
23
The circumference of a circle is:
length x width
dπ
πr2
2πr
