Vikram wants to spray insectiside on a circular lawn of diameter 3.5 meters built outside his circular plot with radius 14 meters. If a packet of insectiside can cover an area of 19.25m^2 how many packets does he need
Answers
Answered by
0
20cm Vikram wants to spray insectiside on a circular lawn of diameter 3.5 meters built outside his circular plot with radius 14 meters. If a packet of insectiside can cover an area of 19.25m^2 how many packets does he need
Answered by
2
HOLA MATE❤❤
Here is your answer⤵
This is a circle within a circle.
The lawn surrounds the plot.
The radius of the plot is :
Radius = 14 + 3.5 = 17.5M
The area of the plot :
22/7 × 14 × 14 = 616 meters squared.
The area of the outer circle is :
22/7 × 17.5 × 17.5 = 962.5 meters squared.
The area of the lawn :
962.5 - 616 = 346.5 meters square
1 packet = 19.25 meters square
346.5/19.25 = 18
18 packets of insecticide is needed
Similar questions