step-by-step explanation:
given perimeter: 28cm
length: 9cm
atp,
2(l+w)=p of the reactangle
2(9+x)=28
18+2x=28
2x=28-18
x=10/2
x=5
therefore width is 5 cm
question 1: step-by-step explanation:
1/4 of 84 = 84รท4= 21
sure thing bud
hope this