Mathematics - 6 July 2007

Hi,

Can someone please help me. My daughter needs help with these geometry questions. I'm ashamed to say that i suck at geometry so any help that i can get will be much appreciated.

1)What is the area of a sector of a circle that has a diameter of 10 in. if the length of the arc is 10 in. ?

a)25 sq in
b)50 sq in
c)75 sq in
d)100 sq in

2)In which one of the following figures is AB=AC?
http://img254.imageshack.us/img254/7200/gfwa9.jpg

3)The circumference of the circle in the following diagram is 128 ft. What is the length of AB?
http://img516.imageshack.us/img516/1767/hgfrw6.jpg

a)16 ft
b)22.5 ft
c)45 ft
d) 105.5 ft

4)In the following diagram AE=2, CE=3, and DE=4.What is the length of BE?
http://img340.imageshack.us/img340/2729/jhjhjgr1.jpg

a)5
b)6
c)8
d)12

5)A sample of a plane geometric surface is the

a)surface of a sphere
b)side of a cylinder
c)side of a box
d)side of a cone

6)What is the angle supplementary to the angle measuring 165°12?

a)14°48
b)75°12
c)180°
d)60°

7)If two straight lines intersect and one angle is 30°, what are the other three angles?

a)30°,90°,180°
b)90°,90°,150°
c)30°,150°,150°
d)90°,150°,150°

8)The shortest distance from a point to a straight line is

a)a parallel through the point to the line
b)the perpendicular from the line to the point
c)the perpendicular bisector of the line
d)a vertical line through the point

9)Find the angle complementary to the angle 80°25.

a)9°35
b)90°
c)99°35
d)180°

10)Through what angle does the minute hand of a clock turn in 12 minutes of time?

a)12°
b)36°
c)72°
d)120°

11)What is the total area of a covered box with a length of 4 ft, a width of 3 ft, and a height of 6 ft?

a)38 sq ft
b)84 sq ft
c)96 sq ft
d)108 sq ft

12)A prism whose sides and faces are all congruent squares is a

a)cube
b)parallelepiped
c)pyramid
d)frustm

13)How would you find the volume of the solid in the following figure shown below?
http://img174.imageshack.us/img174/4118/52241994vn3.jpg

a)use the formula for the volume of a prismoid
b)use the formula for the volume of a frustum
c)you can find only an approximate volume of this figure
d)divide it into solids whose volumes you can find

14)A right circular cylinder has a volume of 500 cu in.If the base has a radius of 4 in, what is the altitude of the cylinder?Round your answer to two decimal places.

a)9.95 in
b)19.79 in
c)29.84 in
d)31.25 in

15)One advantage of the prismoidal formula is that you can use it to

a)calculate precise volumes of all prismoids
b)calculate both volume and surface area
c)determine volumes of figures that are not prismoids
d)estimate the volume of solids that are combinations of other solids.

16)A sphere with a diameter of 16mm has the same surface area as the total surface area of a right cylinder with the base diameter equal to the sphere diameter.How high is the cylinder?

a)8 mm
b)14 mm
c)16 mm
d)18 mm

17)The area formed by a plane cutting through a solid perpendicular to its axis is a

a)longitudinal section
b)cylindrical section
c)cross section
d)middle section

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O.o

ok..

Ummm.... I really need this answered -_- Stupid packet work.

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2007-07-06 03:25:50 · 12 answers · asked by anothernickname 1

1. There are 10 players in a chess tournament. Each player must play each other player one game. How many games will be played ?
a. 20
b. 30
c. 45
d. 55

2. How many liters of an 50 % solution must be mixed with 20 liters of a 75% acid solution in order to make a 60% acid solution ?

please explain
Thank you, answerers !
xD

2007-07-06 03:03:53 · 8 answers · asked by Anonymous

2007-07-06 02:18:18 · 17 answers · asked by Anonymous

Thanks for your answers!

2007-07-06 01:24:59 · 14 answers · asked by I love screwdrivers! 5

options:
-
+
*
/
=
>
<

pls. explain the reason why you chose that sign.. thank you!

2007-07-06 00:25:55 · 7 answers · asked by che-che 1

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i get bored over math that i fall asleep over my notebook...i find it tedious...but are there any ways to make it more fun and interesting...i am 16

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