plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz plz solve it step by step... question no. 4 (ii, iii)
Answers
Answer:
a=52.772
b=80.42
c=37.69
4(i) - diameter = 8.4cm
radius= diameter/2
= 8.4cm/2
= 4.2cm
circumference of circle = 2πr
= 2× 22/7 × 4.2
= 44× 0.6
= 26.4cm
4(ii) - diameter = 12.8cm
radius= diameter/2
= 12.8cm/2
= 6.4cm
circumference of circle = 2πr
= 2× 3.14 × 6.4
= 6.28 × 6.4
= 40.192cm
4(iii) - diameter = 6cm
radius = diameter/2
= 6cm/2
= 3cm
circumference of circle = 2πr
= 2× 3.14 × 6
= 6.28 × 6
= 37.68cm
hope this may help you....