Question
1.
2.
3.
4.
Answer (Detailed Solution Below)
Option 4 : $5544$ cm² / $5544$ cm²
Advertisement
Detailed Solution
सही उत्तर $5544$ cm² / $5544$ cm² है।
Key Points
Helpful?
prepsnap.in • Part -AQuestion:
A sphere has radius $21$ cm. What is its surface area? (Take $\pi=\frac{22}{7}$) / एक गोले की त्रिज्या $21$ cm है। उसका पृष्ठीय क्षेत्रफल क्या है? ($\pi=\frac{22}{7}$ लें)
1.
$2772$ cm² / $2772$ cm²
2.
$1386$ cm² / $1386$ cm²
3.
$55440$ cm² / $55440$ cm²
4.
$5544$ cm² / $5544$ cm²
Correct Answer: $5544$ cm² / $5544$ cm²
Surface area $=4\pi r^2=4\times\frac{22}{7}\times 21 \times 21=4\times 22 \times 63=5544$ cm². / पृष्ठीय क्षेत्रफल $=4\pi r^2=5544$ cm²।
Section 5: Hindi (Hindi-only)
Downloaded from PrepSnap (prepsnap.in)