Find the surface area of a sphere of diameter:

(i) 14 cm (ii) 21 cm (iii) 3.5 m

Open in App

Solution

(i) Radius (r) of sphere =

Surface area of sphere = 4πr²

Therefore, the surface area of a sphere having diameter 14 cm is 616 cm².

(ii) Radius (r) of sphere =

Surface area of sphere = 4πr²

Therefore, the surface area of a sphere having diameter 21 cm is 1386 cm².

(iii) Radius (r) of sphere = m

Surface area of sphere = 4πr²

Therefore, the surface area of the sphere having diameter 3.5 m is 38.5 m².

Suggest Corrections

Similar questions

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

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

Find the surface area of a sphere of radius:

(i) 10.5 cm (ii) 5.6 cm (iii) 14 cm

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

(iii) 3.5 m

$[A s s u m e π = \frac{22}{7}]$

Find the surface area of a sphere of diameter
(i) 14 cm (ii) 21 cm (iii) 3.5 cm

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

(i) 10.5 cm

(ii) 5.6 cm

(iii) 14 cm

$[A s s u m e π = \frac{22}{7}]$

Join BYJU'S Learning Program