Question

calcula el área de las siguientes figuras

Answer 1

Explicación paso a paso:

a)

As = Asemicirculo mayor - Asemicirculo menor

As = π/2.R^2 - π/2.r^2

As = π/2.(9^2 - 5^2)

As = π/2.(81 - 25)

As = π/2.(56)

As = 28.π

As = 87,96 cm^2

b)

As = Arectangulo - 2.(Asemicirculo)

As = Base.Alto - 2. π/2.r^2

As = 6.(4) - π.(2)^2

As = 24 - 4.π

As = 11,43 cm^2