Question

find the circumference of circle when diameter is 4 whole 2 by 3 cm​

Answer 1

Answer:

Let r1=4cm&r2=3cm

Now, area of new circle =πr12+πr22

                                 πr2=722((4)2+(3)2)

                        722×r2=722×25

                                   r2=25

                                     r=5cm

∴  Diameter of new circle =2r=10cm.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

circumference=

$\pi \: d \\ 22 \div 7 \times 14 \div 3 = 44 \div 3$

=14 whole 2/3