Two students make a model of a tree house they want to build. The scale is 1:42. In the scale model, the door is 3 cm tall. How tall should the real tree house door be?

The real tree house door should be 126 cm tall.

Explanation:

Given: Two students make a model of a tree house they want to build. The scale is 1:42.

i.e. 1 cm of model = 42 cm in real

if the in the scale model,the door is 3 cm tall, then the height of real tree house door  = 3  x (42) cm

⇒ Height of real tree house door=  126 cm

Hence, the real tree house door should be 126 cm tall.

"the location of the epicenter" would be the correct answer

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.