Math, asked by shahidalinaskar84209, 2 days ago

iii) ABCD ট্রাপিজিয়ামের BC||AD এবং AD=4 সেমি, AC ও BD কণদ্বয় এমনভাবে АВ DO 1 ০ বিন্দুতে ছেদ করে যে, হয়, তবে BCএর দৈঘ্য কত হবে? oC ОВ 2​

Answers

Answered by moonsarkar947
1

Answer:

Trapezium

Step-by-step explanation:

Given:

BC ∥ AD and AD=4

Solution:

Let BC = m

Let ∠AOD = x⇒∠COD = x

Let ∠OAD = y⇒∠OCB = y

Let CO = 2a⇒OA = a

⇒△OAD and △OCB are similar.

⇒ OA / AD = OC / CB

 \frac{a}{4}  =  \frac{2a}{m}

m = 8

Hence, BC = m = 8

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