Question

calcule o perimetro de  cada figura  a)r=14cm b)r=16cm c)d=36cm

Answer 1

a)
r=14cm

$C=2. \pi .r \\ C=2.3,14.14 \\ C=6,28.14 \\ C=87,92cm$

b)
r=16cm

$C=2. \pi .r \\ C=2.3,14.16 \\ C=6,28.16 \\ C=100,48cm$

c)
d=36cm
r=36÷2
r=18cm

$C=2. \pi .r \\ C=2.3,14.18 \\ C=6,28.18 \\ C=113,04cm$