The side of a square is 2.5 cm. Find its perimeter and area.

Perimeter = 10 cm

Area = 6.25 cm²

Step-by-step explanation:

So to find the Perimeter of the square, we'll use this formula :

Hence, the perimeter would be 10 cm .

We know that the formula of Area to find the square is,

Note : The answer would always be in cm².

Hence, the area of the square would be 6.25 cm².

We are done !

I hope this helps!

Let me know if you have any questions.

:D

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.