Question

solve these three...questions​

Answer 1

1)let r be the radius of circle

circumference=2πr

area=πr^2

given

2πr=πr^2

2=r

so

d=2*r=4

2)volume of cylindrical tank =πr^2h

given

r=7

πr^2h=1848

h=1848*7/22*7*7=12 m

3)sorry not visible clear