The state of stress at a point under plane stress condition is $\sigma_{x x}=40 \mathrm{MPa}, \sigma_{y y}=100 \mathrm{MPa} \text { and } \tau_{x y}=40 \mathrm{MPa} .$ The radius of the Mohr's circle representing the given state of stress in $M P a$ is
(A) 40
(B) 50
(C) 60
(D) 100
The state of stress at a point under plane stress condition is $\sigma_{x x}=40 \mathrm{MPa}, \sigma_{y y}=100 \mathrm{MPa} \text { and } \tau_{x y}=40 \mathrm{MPa} .$ The radius of the Mohr's circle representing the given state of stress in $M P a$ is
(A) 40
(B) 50
(C) 60
(D) 100