Are These Resistor Problem Calculations Correct?

[temaire]

Homework Statement

http://img214.imageshack.us/i/124w.png/

Homework Equations

\[R = \frac{V}{I}\]

P=VI

The Attempt at a Solution

a) Using KVL around the loop, I got V_{R}=6.3 V.
Then I used \R = \frac{V}{I}\ and got R = 1.4 ohms.

b)I used P=VI and got P = 28.35 W.

Are my answers correct?

 

[tiny-tim]

hi temaire!

(btw, LateX here doesn't like extraneous "\"s )

Are my answers correct?

looks good!