Answer : The correct option is, (B)
![204^oC](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1f05yd8de8bry5d09ntqkbf7ma9kc01jtb.png)
Step-by-step explanation :
The conversion used for the temperature from Fahrenheit to degree Celsius is:
![^oC=(5)/(9)* (^oF-32)](https://img.qammunity.org/2020/formulas/chemistry/college/mj2wtkd3y25kapb89vtzqxt6r06pf8bbr7.png)
where,
= temperature in Fahrenheit
= temperature in centigrade
Given:
Temperature in Fahrenheit =
![400^oF](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rdckmdglhvfcbhvo03v9jk91ef6lnrvyh3.png)
Now put the value of Fahrenheit in above expression, we get the value of temperature in Celsius degrees.
![^oC=(5)/(9)* (400-32)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/aswc08q5s2sn2xai50y2ljluxjmf9hxwlf.png)
![^oC=204.4\approx 204](https://img.qammunity.org/2020/formulas/mathematics/middle-school/hyuqy4j9k4527o3xvyh6qrlvl2dm23miv6.png)
Therefore, the approximate temperature of the preheated oven in Celsius degrees is,
![204^oC](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1f05yd8de8bry5d09ntqkbf7ma9kc01jtb.png)