Answer
Perimeter is $20\ in$.
Area is $21\ in^2$.
Work Step by Step
base(b)= 3 in
height (h) = 7 in
Use the formula for perimeter, and substitute the given values.
$P=2b+2h=2(3)+2(7)=6+14=20$
Use the formula for area and substitute the given values.
$A=bh=(3)(7)=21$
