1.the area of a rectangular plot is 432m2. if it's length is 18m find its perimeter also find the cost of fencing it at Rs.5per metre
2. find the breadth of the rectangle of perimeter 660m and whose length is 210m
3. Pinky runs around a square field of side 75 m Bobby runs around a rectangular field with length 160 cm and breadth 105m who covers more distance by how much
answer step by step
Answers
Answer: Step-by-step explanation:
1. GIVEN: area of plot=432m2
length=18m
we know that area of rectangle=length*breadth
so, L*B=Area of plot
18*B=432
B=432/18=24m
perimeter=2(L+B)=2(18+24)=84m
COST OF FENCING 1m=Rs.5
cost of fencing 84m=84*5=420Rs
2.Perimeter of rectangle=2(L+B)
660=2(210+B)
330=210+B
330-210=B
B=120
Breadth=120m
3. case of pinky
side of square field=75m
perimeter of square field=4*side=4*75=300m
case of bobby
length of rectangular field=160cm=1.6m
breadth of rectangualr field=105m
area of rectangular field=length*breadth
area=1.6*10.5=168m
it is clear that pinky covered more distance by (300-168)=132m
there can be little confusion in the 3rd part becoz you have given 160cm but if its 160m .then sorry.