Math, asked by hadiasma290, 11 months ago

find the shaded area with steps and explanation​

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Answers

Answered by allaboutshreya321
1

Answer:

a)(π9÷4)cm²  b)(π56÷9)cm²

Step-by-step explanation:

a) R=5cm

r=4cm

now,

area of shaded reason=(πR²÷(360÷90))-(πr²÷(360÷90))

=(π5²÷4)-(π4²÷4)

=π(5²-4²)÷4

=(π9÷4)cm² ANS

b) R=9cm

r=5cm

now,

area of shaded reason= (πR²÷(360÷40))-(πr²÷(360÷40))

=(π9²÷(360÷40))-(π5²÷(360÷40))

=π(9²-5²)÷9

=(π56÷9)cm² ANS

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