Answer:

Step-by-step explanation:
We want to simplify:

We rewrite the expression under the radical sign to obtain:

We split the expression under the radical sign to get:

Recall that:

This implies that:

Therefore 
Answer:315 cm
Step-by-step explanation:
7x7
7x9.5
7x9.5
7x9.5
7x9.5
Answer:
.14
Step-by-step explanation:
Answer:
B.) 
Step-by-step explanation:
use the slope rule

Fill in values

Simplify

Simplify further

Done.