area of a rectangle is length x height, area of a triangle is 1/2 base x height, so it all depends on what the object is. What object did you have in mind? Doctor Chuck aka mathdoc
The equation for calculating the area of a circle is A r2, where A represents the area and r is the radius of the circle.
The base equation for calculating the area of a rectangle is length multiplied by width.
Area=Length x width or A= L x W
By calculating the discriminant of the equation and if it's negative the equation will have no solutions
The area of a square (the word "rectangle" is redundant), with sides of length s units, is s^2 square units.
The equation for calculating the normal force acting on an object is: Normal force mass x gravity.
calculating surface area
The base and height when calculating the area of a triangle are always perpendicular with each other.
The equation for calculating the polar moment of inertia of a cylinder is I ( r4) / 2, where I is the polar moment of inertia and r is the radius of the cylinder.
The equation for calculating the transverse velocity of a wave is v f, where v is the transverse velocity, is the wavelength of the wave, and f is the frequency of the wave.
There are a great many equations for calculating current; it depends on the context in which you need to calculate current.
V=distance divided by time