Right Triangles
Circles
Unit changes and
density and cost
density and cost
100
An 11m ladder is leaned up against a wall. The base of the ladder is place 4m from the wall. How far up the wall will the ladder reach? Round to nearest tenth.
10.2 ft
100
Are all circles congruent? Are all circles
similar? Answer both questions and explain.
Not all congruent, circles can different radii.
They are all similar because they have the same shape.
100
The density of silver is 10.5 g/cm3. If the mass
of a piece of silver is 12g, what will the volume be
in cubic centimeters? Round to nearest hundreth.
Volume = 1.14 cm3
200
Solve for the mising side. Round to nearest Tenth.
x=8.4
200
What is the radius and center point of the given circle?
radius = 8
center point (2,-3)
200
Round to nearest tenth.
13.4 meters/second
300
Solve for the missing angle to the nearest degree.
Angle = 43 degrees
300
What is the equation of the given circle?
(x-2)2 + (y+3)2 = 64
300
A right cylinder is cut.
a) What shape is the cross section that is formed when the cross section is parallel to the base?
b) What shape is the cross section that is formed when the cross section is perpendicular to the base?
a) Circle
b) Rectangle
400
They are equal.
400
Find the area of the shaded (70 degree) section to the nearest tenth.
Area = 15.3 ft2
400
Which 2-D shape could be revolved about the vertical line to create the 3-D vase shown at the right?
Assume the vase is open at the top and closed at the bottom.
B (second picture)
500
You are flying a kite. The kite string is 22 yards
long. If you are sitting on the ground and holding
the string at an angle of 39°, what is the height of
the kite to the nearest tenth of a yard?
The height is 13.8 yards.
500
Find the length of the major arc to the nearest tenth.
arc length = 30.4 inches
500
A chocolatier makes chocolate bon-bons in the
shape of a sphere with a diameter of 3 cm. The
chocolate used in the bon-bons has a density of
1.29 g/cm3. If the chocolate used costs $0.06 per
gram, how much would the chocolate for 130 bon-
bons cost, to the nearest cent (hundreth of a
dollar)?
$142.25