Area is a region bounded by a CLOSED path, curved path or path with line segments. Area is usually a two dimensional physical quantity, a
designated part on a plane. An example the surface of a table, face of a
wall or a ceiling. It can also be a surface in 3-dimensions. Its units are meter² or centimeter² or feet² etc. A large agricultural field is a good example of an area. Normally and ideally no object can reside or exist with in an area. An object requires a volume. It is a collection of all points enclosed or bounded by the boundary or closed path. It does not have any thickness.
Volume is a 3-dimensional quantity. A physical body occupies space with its material components. It is the amount of space occupied, that is its volume. Any existing body occupying some space has a mass and volume. A mass having a volume, has surface area and thickness, a height perpendicular to its surface at each point on the surface.
It is expressed as meter³, feet³ etc.
Volume is a product of surface area (cross-section) and length - for example for a wire or rod.
Answer:because the parachute is built so the wind will push up on it make the man/woman glide or fall slowly will a stone which has a lot of desentity
falls through the air faster do to is weight and shape .
Explanation:
Answer:0.68 D
Explanation:
Given
Person has a far point distance of 150 cm
i.e. 
therefore
v=-150+3=-147 cm
From Lens Formula
Here the object distance is infinity
Therefore f=-147 cm
and 
P=-0.68 D
Archimedes and the principle of flotation ... "Cast iron sinks" ... unless it's a ship, of course is an old joke.
What has to happen is that supposing the object has a mass of 1kg, then it has to displace 1kg of water to float. However the volume of the object is decided by the object's density. Unless, that is, it is "hollowed out" or otherwise manipulated, such as is done in the hull of a metal ship ...
There's a thing called a "Eureka can" used in physics labs.
