Question

एक वृत का व्यास 2.8 सेमी है वृत्त का क्षेत्रफल ज्ञात कीजिए

Answer 1

radius = 2.8cm
area of circle = pi r²
= (22/7)×2.8×2.8
=8.8×2.8
= 24.64cm²
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