Question

Plz do answer soon with steps

Answer 1

HEY DEAR,
LET RADIUS=R,AND ,OD=(R-2)
JOIN ,OA AND,OB ,AO =R
HENCE TRIANGLE,(AOD) IS RIGHT TRIANGLE,
{WHERE AB =12CM ,AND AD=AB/2=12/2=6CM}
USING PYTHAGORAS THEOREM,
=>AO²=OD²+AD²
=>R²=(R-2)²+6²
=>R² =R²+4-4R+36
=>R²-R²=40-4R
=>4R=40
=>R=40/4=10CM

I HOPE ITS HELP YOU DEAR:-)

Answer 2

Answer:

Let Radius =R,and ,OD=(R-2)

Join ,OA And,OB ,AO =R

Hence Triangle,(AOD) is Right Triangle,

{WHERE AB =12CM ,AND AD=AB/2=12/2=6CM}

Using Pythagoras Theorem,

=>AO²=OD²+AD²

=>R²=(R-2)²+6²

=>R² =R²+4-4R+36

=>R²-R²=40-4R

=>4R=40

=>R=40/4=10CM