Question

a rectangle has a diagonal of 18.4cm and awidth of 7cm

to the nearest centimeter what is the length of the rectangle doo ii*multiple the length and width ?

Answer 1

use pythagoras
\[a^2+b^2=c^2\]
\[7^2+b^2=18.4^2
\]
\[b^2=18.4^2-7^2\] get the right side with a calculator, then take the square root

Answer 2

i get \[b^2=338.56-49=289.56\]
\[b=\sqrt{289.56}=17\] rounded

Answer 3

thanks

Answer 4

welcome