Question

एक अर्धवृत्त का क्षेत्रफल 308 वर्ग मीटर है तो वृत की त्रिज्या ज्ञात करो

Answer 1

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Answer 2

Answer:

The radius of semicircle is 14 m

Step-by-step explanation:

The area of semicircle is 308 m²

Let the area of semicircle = r

Area of semicircle is given by

$A=\frac{1}{2}\pi r^2$

Plugging the known values

$308=\frac{1}{2}\cdot\frac{22}{7} r^2$

Solve the equation for r

$308=\frac{11}{7} r^2\\\\r^2=\frac{308\cdot7}{11}\\\\r^2=196\\\\r=\sqrt{196}\\\\r=14$

The radius of semicircle is 14 m