3 years ago

I need some help on these two questions.

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

4 0

Answer:

see explanation

Step-by-step explanation:

The length of the arcs are calculated as

arc = circumference of circle × fraction of circle

(13)

arc = 2πr × $\frac{72}{360}$

= 2π × 25 × $\frac{1}{5}$ = 10π units

(14)

arc = 2π × 2 × $\frac{270}{360}$

= 4π × $\frac{3}{4}$ = 3π units

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