Math, asked by rohitpitti1823, 1 year ago

यदि एक अर्धवृत्ताकार चाँदे की परिधि 108 से . मी . है , तो चाँद का व्यास है l
( A ) 54 से . मी .
( B ) 42 से . मी .
( C ) 24 से . मी .
( D ) 108 से . मी .

Answers

Answered by Mankuthemonkey01
12
दिया है

परिधि = 108 सेमी

हमे पता है :-

अर्धवृत्ताकार की परिधि = πr + 2r

जहां r त्रिज्या है।

=> πr = 108

=> 22/7 × r + 2r = 108

=> r(22/7 + 2) = 108

=> r (22/7 + 14/7) = 108

=> r(36/7) = 108

=> r = 108 × 7/36

=> r = 3 × 7

=> r = 21 सेमी

अब, चांदे का व्यास = अर्धवृत्त चांदे का व्यास = 2r

=> 2 × 21

= 42 सेमी

आपका उत्तर, विकल्प ब है
Answered by ans81
9
HEY MATE HERE IS YOUR ANSWER

 <b><u>Note :- Hello User i have no hindi language that's why i will give you in English. Hope you understand </b></u>

Given :-

A line = 108 cm


➡️ TT r + 2r

Where R is Radius

➡️ TT r = 108

➡️ 22/7 × r + 2r = 108

➡️ r(22/7 +2) = 108

➡️ r(22/7 + 14/7) = 108

➡️ r(36/7) = 108

➡️ r = 108 × 36/7

➡️ r = 3 × 7

➡️ r = 21 cm

Perimeter = Big Perimeter = 2r

➡️ 2 × 21

➡️ 42 cm

OPTION B is correct






Hope it will help you

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ankit9465: 42 cm
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