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8th Math - Pre-Algebra > Test 10, Unit 8 (8.14 - 8.36) > Flashcards

Test 10, Unit 8 (8.14 - 8.36) Flashcards

1
Q

circumference of a circle

A

C = pid

C = pi2r

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2
Q

area of a rectangle

A

A = lw

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3
Q

perimeter of a rectangle

A

P = 2l + 2w

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4
Q

area of a trapezoid

A

h(b1 + b2)

A = ———————

2

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5
Q

area of a triangle

A

A = 1/2bh

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6
Q

perimeter of a square

A

P = 4s

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7
Q

surface area of a cube

A

SA = 6e2

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8
Q

area of a parallelogram

A

A = bh

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9
Q

area of a square

A

A = s2

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10
Q

area of a circle

A

A = pir2

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11
Q

find the area of a square having 1.6-in. sides

A

A = s2

A = 1.62

A = 2.56 sq. in.

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12
Q

find the perimeter of an equilateral triangle having 4 ft. sides.

A

P = 3s

P = 3 * 4

P = 12 ft.

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13
Q

find the circumference of a circle having a 3 in. radius

A

C = pi2r

C = 3.14 * 2 * 3

C = 18.84 in.

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14
Q

find the area of a rectangle with a length of 12 in. and a width of 10 in.

A

A = lw

A = 12 * 10

A = 120 sq. in.

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15
Q

find the perimeter of a rectangle that is 15 in. x 24 in.

A

P = 2l + 2w

P = 2(24) + 2(15)

P = 48 + 30

P = 78 in.

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16
Q

find the surface area of a cube that has 5 ft. edges

A

SA = 6e2

SA = 6 * 52

SA = 6 * 25

SA = 150 sq. ft.

17
Q

find the lateral surface area of a rectangular prism that is 18 ft. x 15 ft. x 8 ft.

A

LA = 2wh + 2lh

LA = 2(15)(8) + 2(18)(8)

LA = 240 + 288

LA = 528 sq. ft.

18
Q

find the area of a circle if the radius is 5 inches.

A

A = pir2

A = 3.14 (52)

A = 3.14 (25)

A = 78.5 sq. in.

19
Q

find the area of a parallelogram with a base of 25 in. and a height of 13 in.

A

A = bh

A = 25 * 13

A = 325 sq. in.

20
Q

find the area of a triangle that has a 6 ft. height and a 9 ft. base

A

A = 1/2bh

A = 1/2 * 9 * 6

A = 27 sq. ft.

21
Q

construct a right triangle with 3/4 in. and 1 1/2 in. legs

A

draw triangle

22
Q

construct a triangle with 60o and 40o angles and an included side of 1 inch.

A

draw triangle

23
Q

construct a triangle with 1 1/2 in, 1 in, and 1 1/4 in. sides

A

draw triangle

24
Q

construct a triangle with 1 in, and 1 1/2 in. sides and an included angle of 50o

A

draw triangle

25
Q

construct an angle congruent to the given angle

A

draw

26
Q

construct a line parallel to AB

A

draw

27
Q

T or F: Isosceles triangles have no equal sides

A

false

28
Q

T or F: The number pi is irrational.

A

True

29
Q

T or F: If a triangle is equilateral, it is equiangular.

A

true

30
Q

T or F: A scalene triangle has two equal sides

A

False

31
Q

T or F; Similar triangles have the same size and shape

A

false

32
Q

T or F: there are 180o in the angles of a triangle

A

true

33
Q

an acute triangle has three acute angles

A

true

34
Q

T or F: an obtuse triangle has two obtuse angles and one acute angle

A

false

8th Math - Pre-Algebra (43 decks)

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