To evaluate the expression \( 152.2 - 12^2 \div 4 \), follow the order of operations (PEMDAS/BODMAS):
-
Calculate \( 12^2 \): \[ 12^2 = 144 \]
-
Now, substitute this back into the expression: \[ 152.2 - 144 \div 4 \]
-
Next, perform the division \( 144 \div 4 \): \[ 144 \div 4 = 36 \]
-
Substitute this result back: \[ 152.2 - 36 \]
-
Finally, perform the subtraction: \[ 152.2 - 36 = 116.2 \]
The result is: \[ \boxed{116.2} \]