Question

Plleeaassee help it is URGENT MAATHH HELP PLEASE WILL GIVE 5 STARS ON ALL CORRECT ANSWERS, MARK AS BEST ANSWER AND SAY THANKS

Answer 1

using Pythagoras in the first question
c=
`\sqrt{16 ^(2) + 4^(2) } =16.4924`
which is approximately 16.5
for the second question
we also use Pythagoras

`b^2=c^2-a^2`

`\sqrt{13^(2)-12^2}=5`