Surface Area of a sphere with radius 3cm is ________.

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{"content":[{"content":[{"text":"Step 1 (Surface Area Formula):","type":"text","marks":[{"type":"bold"}]},{"type":"text","text":" The surface area "},{"attrs":{"latex":"A"},"type":"math_inline"},{"text":" of a sphere with radius ","type":"text"},{"attrs":{"latex":"r"},"type":"math_inline"},{"text":" is given by the formula:","type":"text"}],"type":"paragraph"},{"attrs":{"latex":"A = 4\pi r^2"},"type":"math_block"},{"content":[{"marks":[{"type":"bold"}],"text":"Step 2 (Substitute the Value):","type":"text"},{"type":"text","text":" We are given the radius "},{"attrs":{"latex":"r = 3"},"type":"math_inline"},{"text":" cm. Substituting this into the formula:","type":"text"}],"type":"paragraph"},{"type":"math_block","attrs":{"latex":"A = 4 \pi (3)^2 = 4 \pi (9) = 36\pi \text{ sq. cm}"}},{"content":[{"type":"text","marks":[{"type":"bold"}],"text":"Step 3 (Evaluate Numerically):"},{"text":" Using ","type":"text"},{"type":"math_inline","attrs":{"latex":"\pi \approx 3.14159"}},{"text":":","type":"text"}],"type":"paragraph"},{"type":"math_block","attrs":{"latex":"A = 36 \times 3.14159 \approx 113.1 \text{ sq. cm}"}},{"content":[{"marks":[{"type":"bold"}],"text":"Step 4 (Conclusion):","type":"text"},{"text":" The surface area is approximately ","type":"text"},{"marks":[{"type":"code"}],"text":"113","type":"text"},{"text":" sq. cm (or ","type":"text"},{"marks":[{"type":"code"}],"text":"36pi","type":"text"},{"text":").","type":"text"}],"type":"paragraph"}],"type":"doc"}

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