A Bag contains 510 in the form of ₹50 and ₹20 notes.Find Number of each type of notes if there are 15 notes....
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Answer:
Step-by-step explanation:
The perimeter of the shaded region is 31.4 cm
Step-by-step explanation:
Given :
Diameter of semicircle PSR = 10 cm
Diameter of semicircle RTQ = 3 cm
Diameter of semicircle PAQ = 7 cm
Radius of semicircle PSR , r1 = 10/2 = 5 cm
Radius of semicircle RTQ, r2 = 3 cm = 3/2 cm
Radius of semicircle PAQ, r3 = 7/2 cm
Perimeter of the shaded region = Length of the arc PAQ + Length of the arc PSR + Length of the arc RTQ
= πr1 + πr2 + πr3
= π(r1 + r2 + r3)
= π(5 + 3/2 + 7/2)
= π{(10 + 3 + 7)/2}
= π × 20/2
= 10 π
= 10 × 22/7
= 10 × 3.14
= 31.4 cm
Perimeter of the shaded region = 31.4 cm
Hence, the perimeter of the shaded region is 31.4 cm
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