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anonymous
 one year ago
Which is true about the volume or surface area of these prisms?
A.
The volume of A is greater than the volume of B.
B.
The surface area of B is greater than the surface area of A.
C.
The surface area of A is greater than the surface area of B.
D.
The volume of B is greater than the volume of A.
anonymous
 one year ago
Which is true about the volume or surface area of these prisms? A. The volume of A is greater than the volume of B. B. The surface area of B is greater than the surface area of A. C. The surface area of A is greater than the surface area of B. D. The volume of B is greater than the volume of A.

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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Do you know how to calculate the volume of a prism?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Ok. Here it is: V = LWH The volume is the length multiplied by the width multiplied by the height.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Here is an example: dw:1435895710114:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now you can find the volumes of the two prisms you are given.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1What is 4 * 5 * 8 = ? What is 10 * 8 * 2 = ?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Correct. That means both of the volumes are the same. That means the answer is not choices A or D.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now we need to find the surface areas of both prisms. Do you know how to calculate the surface area of a prism?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1A prism has 6 sides. We need to find the areas of all six sides and add them all up.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1There are a few shortcuts we can take. A rectangular prism always has 3 sides congruent to the other three sides. Opposite sides are congruent.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so add all the sides twice

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1No. Do only three sides that are different. Add them up and multiply by 2.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1I'll show you what I mean. dw:1435896232247:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The front and back sides are congruent. The area of each one is: 4 cm * 8 cm = 32 cm^2 dw:1435896290934:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0could u plz hurry i need to get to bed its 10:02

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The left side and the right side are congruent. Each has an area of: 5 cm * 8 cm = 40 cm^2 dw:1435896339020:dw dw:1435896356529:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Ok, almost done.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The top and bottom are congruent. Each has an area of 4 cm * 5 cm = 20 cm^2 dw:1435896416148:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Add the 3 faces together and multiply by 2 to get: (32 cm^2 + 40 cm^2 + 20 cm^2 ) * 2 = 92 cm^2 * 2 = 184 cm^2 That is for prism A.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1If you do the same with prism B you get: 2 * ( 10 * 2 + 8 * 2 + 10 * 8) = 2 * (20 + 16 + 80) = 2 * 116 = 232, o3 232 cm^2

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Prism A: 184 cm^2 Prism B: 232 cm^2 Now you can choose between choices B and C.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1No. D deals with volume. We know the volumes are the same. You need to choose between B and C which deal with surface area.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Great. You got it!
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