course mth163
brad morelock, 02-82-394, btm2569@email.vcc.edu, 0826/2009 at 10:10 am
1.)What is the area of a rectangle whose dimensions are 4 m by 3 metersanswer: LxW=A
4*3=12
q002. What is the area of a right triangle whose legs are 4.0 meters and 3.0 meters?
answer:
4*3=12
12/2=6
self crit. i didnt understan why i had to divide that area in half the xplination didnt make scence to me
q003. What is the area of a parallelogram whose base is 5.0 meters and whose altitude is 2.0 meters?
answer: A=BxH
5*2=10
q004. What is the area of a triangle whose base is 5.0 cm and whose altitude is 2.0 cm?
Answer5*2=10
10/2=5
self crit. so the area of a right triangle is alsways didvided by 2?
q005. What is the area of a trapezoid with a width of 4.0 km and average altitude of 5.0 km?
answer: A=4*5
4*5=20
after changing the trapiziod to from a rectangle, therefore it changes the base and altitude
q006. What is the area of a trapezoid whose width is 4 cm in whose altitudes are 3.0 cm and 8.0 cm?
answer: 3+8=11
11/2=5.5
5.5*4=22
q007. What is the area of a circle whose radius is 3.00 cm
answer:3^2=9
9*3.14=28.26
q008. What is the circumference of a circle whose radius is exactly 3 cm
answer: 3+3=6(lenth of the circle.)
6*3.14=18.84
since the radius of the cirucle was 3 we had to find the entire lenthg of the circle?
q009. What is the area of a circle whose diameter is exactly 12 meters
answer:the diameter is 12
12/2=6
6^2=36
36*3.14=113.04
q010. What is the area of a circle whose circumference is 14 `pi meters
14/2=7
7^2=49
`q011. What is the radius of circle whose area is 78 square meters
answer:i do not understand what to do fisrt about taking the squeare root
q012. Summary Question 1: How do we visualize the area of a rectangle?
answer; A = L * W
q013. Summary Question 2: How do we visualize the area of a right triangle
answer:1/2*b*h
q014. Summary Question 3: How do we calculate the area of a parallelogram
a=base+altitude
q015. Summary Question 4: How do we calculate the area of a trapezoid
average alt.*width
q016. Summary Question 5: How do we calculate the area of a circle
a=3.14*radius^2
q017. Summary Question 6: How do we calculate the circumference of a circle? How can we easily avoid confusing this formula with that for the area of the circle?
C = 2 3.14 r: r^2
q018. Explain how you have organized your knowledge of the principles illustrated by the exercises in this assignment.
i have saved all the formulas that were used to my computer for further use
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