चतुर्भुज ABCD में, AB = 17 सेमी, BC = 8 सेमी, CD = 9 सेमी, AD = 12 सेमी, और AC = 15 सेमी है। चतुर्भुज का क्षेत्रफल (सेमी2 में) कितना है?

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  1. 114
  2. 118
  3. 121
  4. 105

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Option 1 : 114
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दिया गया है

AB = 17 सेमी, BC = 8 सेमी, CD = 9 सेमी, AD = 12 सेमी, और AC = 15 सेमी

गणना

aswe11233

ऊपर दिए गए चित्र में:

त्रिभुज ACD का क्षेत्रफल

= 1/2 × 12 × 9 = 54

त्रिभुज ABC का क्षेत्रफल

= 1/2 × 8 × 15 = 60

चतुर्भुज का क्षेत्रफल = 60 + 54 = 114 सेमी2

सही उत्तर 114 है।

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