Question

algebraically find, in simplest form, half the exact area of an equilateral triangle whose perimeter is 36√5

help me please ? :D

Answer 1

do u have any ideas?

Answer 2

equilateral triangle has three equal sides
divide 36√5 by 3 = 12√5
so each side is 12√5

Answer 3

yea i got that far but dont i need the height to find area? how can i get that?

Answer 4

oh wow i didnt even see that

Answer 5

so i would set 6 radical 5 equal to n then do 6 radical 5 times radical 3?

Answer 6

yes :)
then (6√5)(√3) = 6√(5*3) = 6√15

Answer 7

then just plug into area formula? :D

Answer 8

yep :) and remember that you're finding "half the exact area of an equilateral triangle"

Answer 9

how owuld 12 radical 5 times 6 radical 15 work out? im not to good at multiplying radicals :(

Answer 10

i dont think im doing it correctly

Answer 11

72 radical 75?

Answer 12

like (√5)*(√15) = √(5*5*3) = 5√3

Answer 13

yes, that too :)

Answer 14

i would have to simplify the radical 75 though?

Answer 15

mmm I think it would be easier if you do

Answer 16

216 radical 5?

Answer 17

wait no

Answer 18

360 radical 3?

Answer 19

yeah and remember triangle formula had a (1/2) somewhere :P

Answer 20

yes so 180 radical 5 then divide hat by 2 again and get 90 radical 5 as answer?

Answer 21

radical 3

Answer 22

yes, I think so :)

Answer 23

ok thank u so much :D

Answer 24

you're welcome :)

Answer 25

ima become your fan :D

Answer 26

Thank you :)

Answer 27

thanks again i have to go , have a good night