Question

radius of a circle is 18 cm and measure of arc is 80° . find the length of arc ( pie=3.14)​

Answer 1

Answer:

solutions:Radius=18cm

Measure of arc=80°

length of the arc=80÷360×2×3.14×18

=4×2×3.14

=8×3.14

=25.12cm

Answer 2

$\large\boxed{\fcolorbox{blue}{yellow} {Answer}}$

The length of the arc is 25.12 cm.

$\large\boxed{\fcolorbox{blue}{yellow} {Step - by - step explanation }}$

Given :-

1. Radius of circle (r) = 18 cm.

2. Measure of arc (θ) = 80°

3. Value of pie ( π) = 3.14

To find :-

Length of arc ( s)

Solution :-

We know that,

Length of arc =

$\frac{θ }{360} \times 2 \times \pi \times r$

$∴ \frac{80}{360} \times 2 \times 3.14 \times 18 \\ \\ ∴ \frac{8}{36} \times 36 \times 3.14 \\ \\∴ \frac{2}{9} \times 36 \times 3.14 \\ \\ ∴ 2 \times 4 \times 3.14 \\ \\ ∴ 8 \times 3.14 \\ \\ ∴ 25.12 \: \: cm$

Answer :-

The length of the arc is 25.12 cm.

Hope it helps!

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