Question

please help

Answer 1

we need to determine EG before we can determine EC

Answer 2

or, we can go about this in a more general way to determine a formula we can use

Answer 3

typos ... let me edit

Answer 4

the pythag thrm tells us that a^2 + b^2 = c^2

therefore let EG = c

c^2 + z^2 = (EC)^2
^^^

a^2 + b^2 + z^2 = (EC)^2
^^^

Answer 5

we have 8 5 and 12, square them add them and then sqrt the sum

Answer 6

the square root of 8 is 2.82 the square root of 5 is 2.23 and the square root of 12 is 3.46

Answer 7

squre first

8^2 + 5^2 + 12^2 = (EC)^2

64+25+144 = (EC)^2

144+89 = (EC)^2

233 = (EC)^2

Answer 8

since 15^2 = 225, im gonna guess this is a little over 16

Answer 9

okay sooo uhm what do we do next

Answer 10

click the one thats a little over 15 ....

Answer 11

ohh okay lol i thought there where more steps haha so its 15.3

Answer 12

(EC)^2 = 233

15^2 < EC^2 < 16^2

225 < 233 < 256

Answer 13

15.3 is fair enough yes :)

Answer 14

thanks alot CX

Answer 15

good luck