Question

PLEASE ANSWER ASAP DETAILS ARE BELOW

Answer 1

Is to long to explain so I'm doing quite

find the triangle side so 2.1 square minus 1.4 square it is equal to 2.45

now you just multiple 2.45 by 2 because if you notice 2.45 is the triangle side that is missing and this is only the half so multiple by 2 for get the X value, I hope this helps you.