jaybear97
  • jaybear97
find the volume
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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jaybear97
  • jaybear97
1 Attachment
mathmate
  • mathmate
Ab is area of the base, which is an equilateral triangle with each side 8cm. Do you know how to find the area of an equilateral triangle?
jaybear97
  • jaybear97
isnt it like 3/4 s^2

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More answers

mathmate
  • mathmate
|dw:1433244541000:dw|
jaybear97
  • jaybear97
would it be 3.5 than?
mathmate
  • mathmate
correction: =s*2s sqrt(3|dw:1433244718575:dw|
mathmate
  • mathmate
So area of triangle = sqrt(3) s/2 * s/2 =sqrt(3) s/4
mathmate
  • mathmate
* sqrt(3) s^2/4
mathmate
  • mathmate
what does that give you for Ab?
jaybear97
  • jaybear97
i don't understand what to do for s^2/4
mathmate
  • mathmate
s=8 cm = side of triangle. you multiply sqrt(3) by 8^2/4
jaybear97
  • jaybear97
3.5?
mathmate
  • mathmate
8^2=64 8^2/4=16 Multiply that by sqrt(3) gives ?
jaybear97
  • jaybear97
27.7
mathmate
  • mathmate
@Jaynator495 Now you need to find the height of the prism from the diagram, can you do that?
mathmate
  • mathmate
@jaybear97 Now you need to find the height of the prism from the diagram, can you do that? @Jaynator495 Sorry, wrong tag, please ignore.
jaybear97
  • jaybear97
would the height be 19? @mathmate
mathmate
  • mathmate
Yes, the height is 19 cm. (don't forget the units)
jaybear97
  • jaybear97
what do i do for the volume then? @mathmate
mathmate
  • mathmate
The volume is obtained by multiplying the area of the base (Ab) and the height. You can use the calculator for that.
jaybear97
  • jaybear97
526.3/ @mathmate
mathmate
  • mathmate
I have 526.54 if you use more accurate numbers for sqrt(3), such as 1.7321 (instead of just 1.73). Good job.
Jaynator495
  • Jaynator495
You done goofed mathmate x'D

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