Easiest way is to put it on a grid and count squares. Alternatively, you could break the heart down into tiny manageable sized (and manageable shaped) chunks, calculate all the areas then add them together.
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You times the length by width, to get the area of the 2D shape.
A=3.14 1/2d time r2
It has no volume because it's a 2D shape but its surface area is:- length*perpendicular height
To find the the area of a shape is to find the space that is enclosed within a 2D object. Do not mix it up with volume, which is the space enclosed within a 3D object.
what kind of measurement to use when finding the area of a 2d shape