
; to find the length of the hypotenuse, you have to use the pythagorean theorem, which states that, in a right triangle,

.

and

would be the two legs, while

would be the hypotenuse. You need to plug in the values of the legs as

and

:

. Solve for the squares of the two numbers, resulting in

, and ultimately

. Find the square root of

and

, and you get

.
The similarity is that in every weather there is a season.
Answer: 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.
About an Hour and 20 mins
Answer:
Japan practiced a strict isolation policy up until the signing of the Kanagawa treaty on March 31, 1854. This opened the borders of Japan and forced them to trade with the rest of the world. Japan feared the escalation of the situation and succumbed to the United States and opened its ports for trade. After that Japan modernized and grew in power.