Question

Please please please please help

Answer 1

arc = 5π units

Explanation:

The circumference (C) of a circle is calculated as

C = 2πr ( r is the radius )

Here we have a semicircle with d = 10, so r = 5, then

arc =
`(1)/(2)` × 2π × 5 = 5π units

Answer 2

31.40

Explanation:

3.14 x 10

= 31.40

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