Question

what is the area of circle of diameter of 7 cm​

Answer 1

Step-by-step explanation:

Diameter = 7 cm

Radius = 7/2 cm

Area = π ( radius)²

= 22/7 ×7/2 × 7/2

= 77/2

=38.5 cm²

Hope this helps you ☺️

Answer 2

Answer:

$Area \:of \:the \: circle (A)=38.5\:cm^{2}$

Step-by-step explanation:

Given diameter of a circle (d)=7 cm

$Area \:of \:the \: circle (A)\\=\pi\frac{d^{2}}{4}\\=\frac{22}{7}\times \frac{7^{2}}{4}\\=\frac{22\times 7\times 7}{7\times 4 }\\=\frac{77}{2}\\=38.5\:cm^{2}$

Therefore,

$Area \:of \:the \: circle (A)=38.5\:cm^{2}$

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