Question

Find the following ratios.
(i) The ratio of radius to circumference of the circle.
(ii) The ratio of circumference of circle with radius r to its area.
(iii) The ratio of diagonal of a square to its side, if the length of side is 7 cm.
(iv) The lengths of sides of a rectangle are 5 cm and 3.5 cm. Find the ratio of its
perimeter to area.

Plz give answer...urgent...
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Answer 1

Answer:

Let radius is r

circumference of circle is 2πr

then ratio is r/2πr=1/2π

Answer 2

Answer:

1. r : 2 × 22/7 × r

r : 44 / 7 r

2. 2 × 22 / 7 × r : 22 / 7 × r × r

44 / 7 r : 22 / 7 × r × r

3.