Can some one tell me when i have to find the surface area and when i have to find the volume to solve these kind of questions i always get confused in finding this difference, In this question the perimeter of one face of a wooden cube is given to us as 20 cm. We have to find the weight of the wooden cube if 1 cm3 of wood weighs 8.25 gms. Please make a video solutions explaining every thing related to this topic. thank you in advance

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First to find the weight,we need to find the volume of the cube as they have us 1cm3 is equal to 8.25g

Given:- Perimeter=20cm

Perimeter of square =4*side

20=4*side

side=20/4=5cms

Now find the volume of the cube,

Volume of cube=side*side*side

=5*5*5=125cm3

Now,

Weight of cube=8.25*125=1031.25