Question

please please help me in in 3 and 4…


and if you don't know so please don't give answerI have no problem but please don't span it…​

Answer 1

Step-by-step explanation:

(iii) r=98cm, d=196cm

(iv) R= 11.55cm, d= 23.1cm

Answer 2

Step-by-step explanation:

$= > circumference = 616 \\ = > 2\pi \: r = 616 \\ = > 2 \times 22 \div 7 \times r = 616 \\ = > r = 616 \times 7 \div 22 \times 2 \\ = > r = 308 \times 7 \div 11 \times 2 \\ = > r = 154 \times 7 \div 11 \\ = > r = 14 \times 7 \\ = > r = 98 \\ = > d = r \times 2 \\ = > so.....d = 98 \times 2 \\ = > d = 196$

you use this formula and trick.

you do yourself question 2