Math, asked by aavi0333, 3 months ago

A Bag contains 510 in the form of ₹50 and ₹20 notes.Find Number of each type of notes if there are 15 notes....

Answers

Answered by santhoshgm2007
1

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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