Test 10, Unit 8 (8.14 - 8.36)

Question 1

circumference of a circle

Answer 1

C = pid

C = pi2r

Question 2

area of a rectangle

Answer 2

A = lw

Question 3

perimeter of a rectangle

Answer 3

P = 2l + 2w

Question 4

area of a trapezoid

Answer 4

h(b₁ + b₂)

A = ———————

2

Question 5

area of a triangle

Answer 5

A = 1/2bh

Question 6

perimeter of a square

Answer 6

P = 4s

Question 7

surface area of a cube

Answer 7

SA = 6e²

Question 8

area of a parallelogram

Answer 8

A = bh

Question 9

area of a square

Answer 9

A = s²

Question 10

area of a circle

Answer 10

A = pir²

Question 11

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

Answer 11

A = s²

A = 1.6²

A = 2.56 sq. in.

Question 12

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

Answer 12

P = 3s

P = 3 * 4

P = 12 ft.

Question 13

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

Answer 13

C = pi2r

C = 3.14 * 2 * 3

C = 18.84 in.

Question 14

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

Answer 14

A = lw

A = 12 * 10

A = 120 sq. in.

Question 15

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

Answer 15

P = 2l + 2w

P = 2(24) + 2(15)

P = 48 + 30

P = 78 in.

Question 16

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

Answer 16

SA = 6e²

SA = 6 * 5²

SA = 6 * 25

SA = 150 sq. ft.

Question 17

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

Answer 17

LA = 2wh + 2lh

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

LA = 240 + 288

LA = 528 sq. ft.

Question 18

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

Answer 18

A = pir²

A = 3.14 (5²)

A = 3.14 (25)

A = 78.5 sq. in.

Question 19

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

Answer 19

A = bh

A = 25 * 13

A = 325 sq. in.

Question 20

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

Answer 20

A = 1/2bh

A = 1/2 * 9 * 6

A = 27 sq. ft.

Question 21

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

Answer 21

draw triangle

Question 22

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

Answer 22

draw triangle

Question 23

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

Answer 23

draw triangle

Question 24

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

Answer 24

draw triangle

Question 25

construct an angle congruent to the given angle

Answer 25

draw

Question 26

construct a line parallel to AB

Answer 26

draw

Question 27

T or F: Isosceles triangles have no equal sides

Answer 27

false

Question 28

T or F: The number pi is irrational.

Answer 28

True

Question 29

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

Answer 29

true

Question 30

T or F: A scalene triangle has two equal sides

Answer 30

False

Question 31

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

Answer 31

false

Question 32

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

Answer 32

true

Question 33

an acute triangle has three acute angles

Answer 33

true

Question 34

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

Answer 34

false