Please solve 5 it's urgent please solve quick
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volume of original shape = πr²h
= 22/7 × 28 × 28 × 7
22 × 784
= 17284
now in the second shape only shape will be changed and the volume will be same-
∴ volume of new shape = πr²h
=22/7 × 14 × 14 × h = 17284 [ 14=new base radius]
= 616 × h = 17284
h = 17284/616
h = 28 [approx.]
S.A of old shape = 2πrh + 2πr²
2 x 22/7 x 28 x 7 + 2 x 22/7 x 28 x 28
1232 + 4928
=6160
S.A of new shape = 2πrh + 2πr²
= 2 x 22/7 x 14 x 28 + 2 x 22/7 x 14 x 14
= 2464 + 176
= 2640
∴ ratio of both S.A = 6160 / 2640
= 7 : 3
hope u like this
brainliest
= 22/7 × 28 × 28 × 7
22 × 784
= 17284
now in the second shape only shape will be changed and the volume will be same-
∴ volume of new shape = πr²h
=22/7 × 14 × 14 × h = 17284 [ 14=new base radius]
= 616 × h = 17284
h = 17284/616
h = 28 [approx.]
S.A of old shape = 2πrh + 2πr²
2 x 22/7 x 28 x 7 + 2 x 22/7 x 28 x 28
1232 + 4928
=6160
S.A of new shape = 2πrh + 2πr²
= 2 x 22/7 x 14 x 28 + 2 x 22/7 x 14 x 14
= 2464 + 176
= 2640
∴ ratio of both S.A = 6160 / 2640
= 7 : 3
hope u like this
brainliest
Abhijit999:
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