Answer:
A=252
Step-by-step explanation:
B=28mm
P=74mm
we know the two sides of B= 28
28+28= 56
the perimeter is every added up P= 74
so we must minus 56-74 = 18
meaning side A= 18 then we divide it by 2 which is 9
to check... 9+ 28+9+28 = 74 same answer if 18+56= 74
Formula for Area = Lxw meaning 9x28
9x28 = 252
