Solve the area formula for a circle, A = πr2, for r2. r2 = Aπ

r2 = A – π

The solution of r² is r² =

Step-by-step explanation:

To solve an equation for one of its variables, do that

Let us solve the question

∵ The formula of the area of the circle is A = π r²

∵ The subject is r² ⇒ The variable which we need to solve for it

→ By using the 1st step up divide both sides by π to move it from the right

   side to the left side

∵ =

∴ = r²

→ Switch the two sides

∴ r² =

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)

hence, the required result is

step-by-step explanation:

suppose we have two matrices a and b

we will assume the two matrices

we have to compute b-a which means subtracting corresponding elements of a from b.

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