find the shaded area with steps and explanation
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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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