Question

In the adjoining figure, the radius is 3.5 cm . find the perimeter of the quarter of the circle, correct to one decimal place​

Answer 1

Answer:

$length \: of \: an \: arc = \frac{90}{360} \times 2 \times \frac{22}{7} \times 3.5 \\ = 5.5 \\ perimeter = 2 \times 3.5 + 5.5 \\ =7.0 + 5.5 \\ = 12.5$

Answer 2

Answer:

brainlist answer

length of an arc... =

360

90

×2×

7

22

×3.5

=5.5

perimeter=2×3.5+5.5

=7.0+5.5

=12.5