Question

एक ग�ले के वक्र पृष्ठ का क्षेत्रफल 1386 वर्ग सेंटीमीटर है। इसका आयतन ज्ञात करो।

Answer 1

Answer:

4851cm^3

Step-by-step explanation:

वक्र पृष्ठ का क्षेत्रफल =1386 cm^2

4πr^2=1386cm^2

r^2=441/4

r=21/2

आयतन=4/3πr^3

=4/3×22/7×21/2×21/2×21/2

=4851cm^3

Answer 2

Given,

surface area of sphere =1386cm^2

r=?

volume =?

surface area of sphere =4πr^2

1386=4×22/7×r^2

r^2=1386×7/4×22

r^2=441/4

r=21/2cm

volume of sphere

=4/3×πr^3

=4/3×22/7×21/2×21/2×21/2

=11×441

=4851cm^3

r=21/2

r=10.5cm

volume of sphere =4851cm^3

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