Question

Calcule a área das figuras abaixo ​

Answer 1

Resposta:

a)

$Area_{quadrado} = l^{2} \\A= 21^{2} \\A=441$

b)

$Area_{triangulo} = \frac{base*altura}{2} \\\\A=\frac{25*12}{2} \\A=25*6\\A=150$

c)

$Area_{circulo} = \pi raio^{2}\\ A=\pi \sqrt{121} \\A=11\pi$

d)

$Area_{trapezio} = \frac{(Base_{maior} + Base_{menor})*2 }{2}\\\\A=\frac{(46+23)*2}{2} \\A=\frac{(69)*2}{2} \\\\A=69$