Question

FIND THE RATIO BETWEEN THE AREAS OF CIRCLES OF RADII 4CM AND 8CM RESPECTIVELY​

Answer 1

Answer:

The ratio between the areas of circles of radii 4cm and 8cm is 1:4

Step-by-step explanation:

$\frac{\pi ({r1)}^{2}}{\pi( {r2)}^{2} } \\ = \frac{\pi {4}^{2} }{\pi {8}^{2} } \\ = \frac{ {4}^{2} }{ {8}^{2} } \\ = \frac{16}{64} \\ = \frac{1}{4}$

Therefore the ratio between the areas of circles of radii 4cm and 8cm is 1:4