This was in the comment box and I thought for those a little more adventurous you would like to know this too. Thanks Sally-Ann
Thanks Jak. You can also click on the image and then go to the menu at the top of your menu bar - PICTURE TOOLS and by clicking this it will show you exactly how big your image is - shown under SIZE (Often at the end of your menu bar depending how you have customised your Word set up).
Secondly you can also highlight your image by clicking it, and then click on PICTURE TOOLS find WRAP TEXT then click SQUARE in the drop down box and you can move your image anywhere on the page and it will stay there.