Math, asked by anjanaanilpriya, 8 months ago

Swati cuts out three SEMI-CIRCULAR pieces of radius 5 cm from a large sheet of paper. She then sticks them on a piece of cardboard to form a design in such a way that there is no overlap. What is the perimeter of the shape (in cm)? a) 15π b) 30π c) 15π+10 d) 30π+10

Answers

Answered by amitnrw
3

perimeter of the shape  = 15π + 10 cm

Step-by-step explanation:

Perimeter  =  Perimeter of Circle  +  Perimeter of Semicicrle + Diameter

= 2πR  + (1/2)2πR  + 2R

= 2π(5) + π5 + 2*5

= 15π + 10

perimeter of the shape  = 15π + 10 cm

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Attachments:
Answered by PiaDeveau
1

Perimeter of the semi-circular sheets is (15π) cm.

Step-by-step explanation:

Given:

Radius of semi circle = 5 Cm

Find:

Total perimeter of the semi-circular sheets = ?

Computation:

Total perimeter of the semi-circular sheets = 3 × Perimeter of semi Circle  

Total perimeter of the semi-circular sheets = 3 × πR  

Total perimeter of the semi-circular sheets = 3 × π(5)

Total perimeter of the semi-circular sheets = 15π

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