Geometry (Perimeters & Areas) Flashcards

Perimeters, Areas, Circumference, Diameter, and Distance Formula

1
Q

What is the perimeter of a right triangle?

A

P = base + height + hypotenuse

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2
Q

What is the perimeter of a triangle?

A

P = a + b + c

(where a, b, and c are the sides of a triangle)

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3
Q

What is the perimeter of a square?

A

P = 4s

(where s is the side of the square)

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4
Q

What is the perimeter of a rectangle?

A

P = 2l + 2w

[where l is the length and w is the width]

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5
Q

What is the circumference of a circle if you know the diameter?

A

C = πd

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6
Q

What is the circumference of a circle if you know the radius?

A

C = 2πr

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7
Q

What is the area of a right triangle?

A

A = ½bh

(where b is the base, and h is the height)

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8
Q

What is the area of a triangle?

A

A = ½bh

(where b is the base, and h is the height)

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9
Q

What is the area of a rectangle?

A

A = lw

(where l is the length and w is the width)

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10
Q

What is the area of a circle?

A

A = πr^2

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11
Q

What is the area of a square?

A

A = s^2

(where s is the side of the square)

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12
Q

What is the area of a cube?

A

A = 6s^2

(where s is the side of the cube)

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13
Q

What is the base area of a cylinder?

A

BA = πr^2

(where r is the radius)

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14
Q

What is the area of a sphere?

A

A=4πr^2

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15
Q

What is the diameter of a circle?

A

D = 2r

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16
Q

What is the distance formula?

A

d = √(x2−x1)^2+(y2−y1)^2

17
Q

What is the area of a cylinder?

A

A = 2πr^2 + 2πrh

18
Q

What is the area of a trapezoid?

A

1/2(b1 + b2)h

(where b1 and b2 are the lengths of the parallel sides)

19
Q

What is the area of a parallelogram?

A

A = bh