Here you go I hope I helped
As, v=√2as
Squaring both sides,
v²=2as
∴ s= v²/2a
Step-by-step explanation:
x -0.1x = x(1-0.1) = 0.9x
Area of a circle is π*r²
sub what we're given
49π= πr²
49π= π*r²
r²= 49π/π
r²=49
r=7
The diameter is twice the radius therefore the diameter is 14 units