Vol & Surface Area
Very
Interesting...
Interesting...
Right This Way
More Than Meets the Eye
Tri Triangle Angle
Tri
Tri
100
B. V = pi(2.5)2h
100
Without looking!!!
What is the formula for simple interest?
I = Prt
interest = principal x rate x time
100
Find the missing area.
81 units2
225 - 144 = 81
100
Translate figure ABC 4 to the left and 3 up. What are the coordinates of C' ?
C' (3, 8)
Bonus: Can you represent this algebraically?
100
Find the value of x.
x = 11
Bonus: What is the measure of angle B?
200
Find the total surface area.
A = 164 cm2
TSA = Ph +2B
(10 + 10 + 3 + 3)4 + 2(10 x 3)
200
Two customers took out loans from a bank.
Henry took out a 4-year loan for $5,000 and paid 4.2% annual simple interest. Ingrid took out a 6-year loan for $5,000 and paid 3.9% annual simple interest.
What is the difference between the amounts of interest Henry and Ingrid paid for their loans?
Henry 5000x.042x4 = 840
Ingrid 5000x.039x6 = 1170
1170-840 = 330
200
find the square root of the sum of the legs (square the legs, add them together, find the square root / square root of a2+b2 / square root of c2-b2)
200
Reflect the figure over the x-axis. What are the coordinates of B'?
B' (3, -4)
200
x = 30, measure of angle CDF = 130o
300
Find the Lateral Surface Area
LSA = 735 yd2
LSA = Ph (16 + 17 + 17)20
300
Dominick and Ryan both invest $6,500 into savings accounts that earn 6.8% interest. If Dominick’s account earns compound interest and Ryan’s earns simple interest, how much more interest will Dominick have earned after 10 years?
$1,629.48
300
Do the following side lengths form a right triangle?
16, 18, 6
no.
62 + 162 does not equal 182
300
(y, -x)
300
x = 12
400
(Use 3.14 for pi)
V = 716.31 in3
V = pir2h 3.14(2.52)36.5
400
You have an account that earns compound interest. If the formula gives you the future value of the invested money, how do you find the interest earned?
A - P = I
(subtract the Principal from the future value to find the interest earned)
400
14.05
400
400
x = 16
500
Write a problem that could be represented by the given equation:
something involving a cone with a radius of 7.625 and a height of 19.3
500
Surprise! Here's a Dilation question.
A(2, 6), B (8, 4), C(6, 10)
If triangle ABC is dilated by a scale factor of 3/2, what are the new coordinates?
A'(3, 9), B' (12, 6), C' (9, 15)
multiply each coordinate by the scale factor
500
8.94 ft
500
The Gateway Arch in Missouri casts a 140 foot shadow while an 18 foot pole casts a 4 foot shadow.
How tall is the arch?
630 ft
500
x = 9, 1330 & 133o