they are made from no.2
gently sloping volcanoes are called shield volcanoes and they are formed from many eruptions of lava that is relatively low in silica, so it spreads out in many thin layers and creates the gently sloping sides of a shield volcano.
They both have a sloping side. A wedge has 2 sloping sides, but an inclined plane has only1.
2 sides in a lean-to It's a shack with one sloping side against a (usually) vertical side. The ends are open, and the roof is formed by the meeting of the 2 sides.
A shield volcano
No, not all volcanoes have a side vent. Some volcanoes only have a main central vent from which lava and gases are erupted. Other volcanoes may have multiple vents, including side vents, that release magma and gases to the surface.
YES
The answer depends on which angle is given: whether it is the angle made by the sloping face with the base, or the angle at the apex or even the angle that the sloping face makes with the vertical. Essentially, though, you use Pythagoras's theorem or, equivalently, the sine rule.
there is a side vent and main vent on most volcanoes. some just have a main vent
An inclined plane with one sloping side is called a ramp, used to move objects up or down with less force. An inclined plane with two sloping sides is called a wedge, used for splitting objects or holding them in place.
YES!!! It is an Assymmetric Trapezium. The word 'Assymetric' means that it is not symmteric; that is one side is NOT a mirror image of the other. So a pair of parallel lines, each of different length. On the left side ,say, you can have a vertical/right angled/90 degree intercepting line. On the right side , say, you can have an angled/sloping line. The two internal angles are one acute and the other obtuse, but their sum is 180 degrees. This is an assymetric trapezium. A symetric trapezium the one sloping side is a mirror image of the other sloping side.
The mechanical advantage (MA) of a wedge is calculated by dividing the length of the sloping side of the wedge by its thickness. MA = Length of sloping side / Thickness. This ratio represents how much the force is multiplied when using a wedge to exert a force.
It will say "made in Belgium" on the barrel. Usually on the right side.