Question

iii) Find the volume of two pillars if height of the pillar is 7m and radius of the
base is 1.4m.


a) 86.24 m3
b) 186 m
c) 198.48 m’
d)93 m​

Answer 1

Answєr :-

ᴠᴏʟᴜᴍᴇ ᴏғ ᴄʏʟɪɴᴅᴇʀ = πr²h

r = 1.4m

h = 7m

So ,

( ᴠᴏʟᴜᴍᴇ ᴏғ ᴏɴᴇ ᴄʏʟɪɴᴅᴇʀ )

22 × 1.4² × 7

━━

7

= 22 × 1.96

= 43.12

( ᴠᴏʟᴜᴍᴇ ᴏғ ᴛwᴏ ᴄʏʟɪɴᴅᴇʀ )

43.12 × 2

= 86.24m³

ᴛʜᴇʀᴇғᴏʀᴇ ,

a ís thє corrєct optíon

Hᴏᴘᴇ Tʜɪs Hᴇʟᴘs Yᴏᴜ

Answer 2

$\LARGE{\boxed{\sf{{Answєr :}}}}$

Find the volume of two pillars if height of the pillar is 7m and radius of the

base is 1.4m.

a) 86.24 m³ ✓

b) 186 m

c) 198.48 m

d)93 m

Exᴘʟᴀɴᴀᴛɪᴏɴ :-

$\LARGE{\boxed{\sf{{ᴠᴏʟᴜᴍᴇ ᴏғ ᴄʏʟɪɴᴅᴇʀ = πr²h}}}}$

ᴠᴏʟᴜᴍᴇ ᴏғ ᴏɴᴇ ᴄʏʟɪɴᴅᴇʀ :-

= 22/7 × 1.4² × 7

= 22 × 1.96

= 43.12m³

ᴠᴏʟᴜᴍᴇ ᴏғ ᴛwᴏ ᴄʏʟɪɴᴅᴇʀ :-

43.12 × 2

= $\LARGE{\boxed{\sf{{86.24m³}}}}$

Hᴏᴘᴇ Tʜɪs Hᴇʟᴘs Yᴏᴜ