An aluminum plate is made according to the following dimensionsThe outer radius is 10 inches and the inner radius is 3 inches(See diagram below) Use p 3.14 as an approximate value(a) How many square inches in area is the aluminum plate (the shaded region)? (b) If the cost to construct the plate is $7.50 per square inch, what is the construction cost?
In addition to the other answersWhat causes ice damming is heat from your house is able to get to the roof, this melts snow, the water runs down your roofWhen it gets to your eves it there is no heat under the eves so it refreezesThis happens a couple times and you end up with water just sitting against your heated roof with no where to go because of the ice built up on the eveOne way to combat this is to have a properly vented roof, in this instance cold air is pulled up from the eve's, along the underside of your roof (keeping it cold and keeping the snow from melting) and out near the peakIf your roof is even venting it is pulling the hot air from your dryer up against the underside of the roof which is only melting the snow fasterIt sounds like there is more than one cause to the ice damming (shallow pitch to the roof, not enough insulation, poor venting, inadequate ice and water shield under the shingles, etc) Until you can tackle any or all of the contributing factors I would suggest clearing your roof of snow as often as you can and getting heating coils for your eves to keep the water that runs down from turning to ice.
missing diagram It appears to be in the shape of a disk with a hole in the center, but what is p? what is the shaded area? editI guess by p you mean pi.
AbsolutelyThe heat is melting the snow, which refreezes when it gets far enough away from the heat sourceIf you can extend the vent away from the eaves, it may solve the problemYou may need to caulk around the vent pipe to prevent the leak back inside the house.
