Question 2 (iii)
Find the surface area of a sphere of diameter:

(iii) 3.5 m

$[A s s u m e π = \frac{22}{7}]$

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Solution

(iii) Radius (r) of sphere $= \frac{3.5}{2} = 1.75 m$

Surface area of sphere $= 4 π r^{2}$

$= [4 \times \frac{22}{7} \times (1.75)^{2}] m^{2} = 38.5 m^{2}$

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Question 2 (iii)
Find the surface area of a sphere of diameter:

(iii) 3.5 m

$[A s s u m e π = \frac{22}{7}]$

Question 2 (i)
Find the surface area of a sphere of diameter:

(i) 14cm $[A s s u m e π = \frac{22}{7}]$

Question 1
Find the surface area of a sphere of radius:

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154 c m^{2}

[A s s u m e π = \frac{22}{7}]

Question 6
Find the radius of a sphere whose surface area is $154 c m^{2}$ .

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