Question

Pls help!! look at photo

Answer 1

A : 2:1
because the first one has double the radius (2)

Answer 2

Answer:

2 : 1

Explanation:

$\sf area \ of \ sector: \dfrac{\theta}{360} \pi r^2$

1st sector:

$\sf \rightarrow area: \dfrac{80}{360} \pi (8)^2 = 44.68 \ cm^2$

2nd sector:

$\sf \rightarrow area: \dfrac{160}{360} \pi (4)^2 = 22.34 \ cm^2$

Ratio of 1st sector to 2nd sector:

44.68 : 22.34

2 : 1