Question

find the volume of a cube having total surface area of 661.5 sq cm​

Answer 1

Answer:

TSA = 661.5 sq cm

$6 {x}^{2} = 661.5 \\ {x}^{2} = \frac{661.5}{6} \\ {x}^{2} = 110.25 \\ x = 10.5$

$vol = {x}^{3} \\ = 10.5 \times 10.5 \times 10.5 \\ = 1,157.625$

hope it helpz

Answer 2

Answer:

T.S.A = 661.5sq cm

To find = volume

solve :-

we know ,

$t.s.a of cone = 6a^{2}$

6a^{2}

661.5 = 6a^{2}

a^{2}= 661.5/6

a^{2}=110.25

a= √110.25

a = 10.5

volume = a^{3}

v = (10.5)^{3}

v = 1157.625cm^{3}