Surface Areas and Volumes
RD Sharma
CBSE
Grade 10
Question:
Find the total surface area of a hemisphere of radius $10\text{ cm}$. (Use $\pi = 3.14$)
Step-by-Step Solution
Key Concept: $\text{TSA} = 3 \pi r^2 = 3 \times 3.14 \times 100 = 942\text{ cm}^2$.
$\text{TSA} = 3 \times 3.14 \times 100 = 942\text{ cm}^2$. [2.0 Marks]
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🎯 Official CBSE Marking Scheme:
Applying $3\pi r^2$ and evaluating $= 942\text{ cm}^2$: 2.0 Marks
Correct Answer:
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