Marta is making a flag with the given dimensions. the perimeter of the flag is 100 inches. how much material, in square inches, is needed to make the flag?
? ? square inches
if the material costs $0.15 per square inch, how much will marta spend on materials to make the flag?
$? ?

She would need 360 square inches of fabric, we know this by using the heron's formula P =100, S = 50

A = (50(50-41)(50-41)(50-18))^.5

A = (50(9^2)(32))^.5

A = 9(50(32))^.5

A = 9(1600)^.5

A = 9*40

A = 360

360*0.15 per piece equals $54

Answers:

360, 54

idk

step-by-step explanation:

maybe try   if it is work from a book, if not try