Question

7 सेंटीमीटर त्रिज्या वाले एक गोले का पृष्ठीय क्षेत्रफल ज्ञात करें​

Answer 1

Answer:

radius=7cm

total area = half area of sphere + area of circle

= (1/2)4pi(radius)^2 + pi (radius)^2=

2pi(7)^2 + pi(7)^2= 3pi(7)^2 = 3×22×7×7/7=3×22×7=

462 sq cm