Question

Please tell the answer of q20 it is very urgent..pls answer fast.....

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

ar. of bigger circle=22/7×14×14

616cm²

ar. of smaller circle is154cm²

Therefore ar. of ring is 462cm²

ar of bigger sector is πr²θ/360

22/7×14×14/9

616/9cm²

ar of smaller sector is 154/9cm²

ar. of ring not shaded is 462/9cm²

Therefore ar. Of shaded area is 462-462/9=410.6666cm²