Question

Can u please help me with #38 I HAVE TRIED SO HARD ON IT and still cant get the answer please help:)?
http://cbuddman.files.wordpress.com/2009/08/final-review-part-2.pdf

Answer 1

first you would need to find the area of the rectangle. Then you would find the area of the triangle with the formula A = 1/2 B H.
To find the height you would need to sin rule.

Answer 2

help please:)

Answer 3

have you learnt of special triangles?

Answer 4

30 60 90...45 45 90..i learned them

Answer 5

if you used the sin rule the length opposite 60 is \[\sqrt{48}\]

Answer 6

they want the area of this question right?

Answer 7

yes

Answer 8

if you used the sin rule again you would find the bottom length to be equal to 4.

Answer 9

so the area of the triangle is equal to 8 root 3. \[8\sqrt{3}\]

Answer 10

HOW U GET THAT?

Answer 11

ok.. the area of the traingle is 1/2 b h right?
1/2 * 4 * \[\sqrt{48}\]
I have gotten this by using right angle trig? sin cos tan?

Answer 12

1/2 * 4 * \[\sqrt{48}\] = \[\sqrt{192}\]
which is simplified to be\[8\sqrt{3}\]

Answer 13

so now i know that whats next?

Answer 14

well i got the area of the triangle so all you need now is area of rectangle and add them together

Answer 15

and sorry this has nothing to do with special triangles

Answer 16

ill complete it for you... (hope you can understand this)
the bottom of the rectangle is equal to 6 ( 10-4)
the length is \[\sqrt{48}\]
so its \[\sqrt{48}\] * 6
which is \[24\sqrt{3}\]
so now we add these area together which is \[32\sqrt{3}\]

Answer 17

do you understand it if you dont ill explain it again :)

Answer 18

i thought the bottom rectangle was 4?

Answer 19

It says on the diagram the whole length which is the triangle and rectangle is equal to 10. The bottom of the triangle is 4. So the rectangle is 10-4. which is 6

Answer 20

oh okay! THANK U SO MUCH!:)

Answer 21

:)

Answer 22

if you dont mind giving me a medal :) please do

Answer 23

HOW CAN I DO THAT?

Answer 24

click best response lol

Answer 25

OH lol ok i will wait hold up wat do i add to get 32√3 lol

Answer 26

well the area of the triangle and area of rectangle
which is 24 root 3 + 8 root 3

Answer 27

okay thank u!! so much:)