Answer:
The area is about 
Step-by-step explanation:
To find the area you must use the equation A=
h
Can I see a picture of the prism
Answer:
The nth term is: 
a40 = 10
Step-by-step explanation:
Arithmetic sequence:
In an arithmetic sequence, the difference between consecutive terms is always the same, and this difference is called common difference.
The nth term of a sequence is given by:

In which
is the first term and d is the common difference.
1/4,1/2
This means that:

1/4
This means that 
The nth term is:


Then find a40.

So
a40 = 10
Answer:
45.8 cm
Step-by-step explanation:
Let the length of other leg be l
By pythagoras theorem,

I'm sorry I don't know but you can use photomath you can just download it from the App