S is 3cm. n is 7
what is A?

area of regular polygons

Calculating the area of a regular polygon can be as simple as finding the ... Perimeter = s + s + s + s + s ... Area of a polygon using the formula: A = (L2 n)/[4 tan (180/n)] ... 600√3 cm 2.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

something over 10 so ? /10

step-by-step explanation: