An isotonic contraction can be concentric, which is where the muscle shortens as the fibres contract or eccentric, where the fibres contract as the muscle lengthens. When a muscle contracts with no resulting movement, it is an isometric contraction. Page: 1  1. 2  2.
To determine how much paint your house needs, measure the house's perimeter. Then multiply that figure by the height, excluding gable ends. Take the measurements with a steel tape measure, or reel out a ball of twine around the house and mark and measure the twine.
Youâll need to decide whether you want to paint that too. Youâll also want to figure out exactly how much paint you need. Glidden.com has an online paint calculator that is really helpful when youâre planning a project.