Question

would this be right??

Answer 1

9*9*4

Answer 2

(9*4)9

Answer 3

finding volume

Answer 4

no, that's not right.

Answer 5

\[(1 / 2)9\times9\times4\]

Answer 6

is the triangle an equilateral triangle, a right angle triangle or an isosceles triangle?

Answer 7

would the area be \[(1 / 2)81\left( 4 \right)=162 \]

Answer 8

how did you arrive at (1/2)*9*9? How do you know the height of the triangle is 9?

Answer 9

the bottom part has a 9 and has a tick mark so all three sides are equal and 4 in the height

Answer 10

still, the height is not 9, only the sides are 9.

Answer 11

you have to calculate the height of the triangle and plug it in the formula 1/2 base*height. base is 9.

Answer 12

9 is the base

Answer 13

right. calculate height using Pythagoras theorem

Answer 14

V=Bh= (1/2*9*9)(4)= (40.5)(4)=162

Answer 15

I am talking about the height of the triangle. for an equilateral triangle of side 9, how do you calculate its area?

Answer 16

draw an equilateral triangle on a piece of paper. how do you calculate its height?

Answer 17

a^2+b^2=C^2

Answer 18

ok good, what is a, b and c in an equilateral triangle?

Answer 19

a=9 b=9 c=162

Answer 20

no, that is not right. http://math.about.com/od/formulas/ss/areaperimeter.htm
In that picture, the area of the triangle is 1/2b*h. so, what do you know about an equilateral triangle that will make finding the height easier?

Answer 21

the height in my picture is 4

Answer 22

no, that is not the height of the triangle, it is the height of the prism. I am talking about the height of the triangle.
The volume of the prism is the area of the triangle times the height of the prism, correct?
so you know the height of the prism. Now you need to find the area of the triangle. So, in order to do that you need to find the height of the triangle, so that you can put it in the formula 1/2b*h.