The 8th,10th and 11th question if I see the answer in the answers page the answer for 8th is 22.5 cm, the answer for 10th question is 22.5 cm and the answer for 11th question is B; by 40 cm
Answers
Answer:
hey mate here are yout answers
Step-by-step explanation:
8.perimeter of square=90cm
4(side)=90cm
:.side=90/4=22.5cm
9.side=15m
perimeter=4(side)=4×15=60m
cost of fencing=Rs.18/m
total cost of fencing=18×60=Rs.1080
10.side1=6.5cm
side2=8.2cm
side3=7.8cm
perimeter=side1+side2+side3=6.5+8.2+7.8=22.5cm
11.side of square=65m
perimeter (distance ran by A)=65×4=260m
length of rectangle=60m
breadth of rectangle=50m
perimeter(distance ran by B)=2(60+50)=2×110=220m
hence B runs shorter distance by 40m.
hope this helps you.........
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Step-by-step explanation:
8.
Wire length = 90 cm.
Perimeter of square = length of wire
=> 4 * S = 90
=> S = 22.5
Length of side of square = 22.5 cm.
10.
Perimeter = sum of all sides.
=> 6.5 + 8.2 + 7.8
=> 22.5 cm
Perimeter = 22.5 cm
11.
runs around a square:
side = 65 m
Perimeter = 4 * Side
perimeter = 4 * 65
perimeter = 260
Runs around rectangle:
l = 60 m
b = 50 m
perimeter = 2(l+b)
= 2(60 + 50)
= 2 × 110
= 220 m
Since 260 > 220 .
Hence, Shorter length ran by Square track and difference = 40 m.
Hope it helps!