show each step and formula.

$5\mathrm{.}21$ The Cessna Cardinal, a single$-$engine light plane, has a wing with an area

of $16\mathrm{.}2$m$^(2)$ and an aspect ratio of $7\mathrm{.}31.$ Assume that the span efficiency

factor is $0\mathrm{.}62.$ If the airplane is flying at standard sea$-$level conditions with a

velocity of $251$km$//$h$,$ what is the induced drag when the total weight is $9800$

N $?$

$5\mathrm{.}22$ For the Cessna Cardinal in Prob. $5\mathrm{.}21,$ calculate the induced drag when

the velocity is $85\mathrm{.}5$km$//$h $($stalling speed at sea level with flaps down$).$

Answer for $5\mathrm{.}22$ is $1202$ N