the legs of a right triangle are 15cm. and 36cm.
what is the length of the hypotenuse?

a. 21
b. 39
c. 51
d. 57

Question

the legs of a right triangle are 15cm. and 36cm.
what is the length of the hypotenuse?

a. 21
b. 39
c. 51
d. 57

solomonzelman · Answer

$\huge\color{black}{ \sf    a^2+b^2=c^2~~-> }$       $\huge\color{blue}{ \sf     15^2+36^2=c^2 }$

$\huge\color{blue}{ \sf     15^2+36^2=c^2 }$

$\huge\color{blue}{ \sf     225+1296=c^2 }$ 

$\huge\color{blue}{ \sf    1521=c^2 }$ 

$\huge\color{blue}{ \sf    ±39=c }$ 

$\color{black}{ \sf   distance~~~~can't~~~~be~~~~negative,~~~~it~~~~can~~~~only~~~~be~~~~positive.~~~~So, }$
$\color{black}{ \sf   your~~~~answer~~~~would~~~~be }$    $\color{black}{   39 }$,    $\color{black}{ \sf   which~~~~is~~~~option }$    $\color{black}{   B }$    $\color{black}{ \sf  in~~~your~~choices.}$

anonymous · Answer

Thanks you were right!!

solomonzelman · Answer

Yeah, I bet I was:) xD 

come here if you need more help.

anonymous · Answer

k! i probably will cause i'm homeschooled

solomonzelman · Answer

Home-schooled? Alrighty... , it must be difficult there without a teacher near. I can imagine you having to wait a day or 2 (times even 3 or 4) for a teacher to web-reply.

Good luck with school !

anonymous · Answer

thx

anonymous · Answer

but i've been homeschooled my whole life so normally i don't have problems like that!

anonymous · Answer

but i still hate math teaching it to ur self is even harder