the perimeter of one face of a cube is 20 cm. find the L. S. A of the cube. also find the volume of the cube .
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Answered by
0
hey mate
perimeter of one side of cube is 4a
so u will get a as 20/4=5
so now u have one side
LSA=4a^2=4×25=100cm^2
volume=a^3=125cm^3
so u can just substitute to get them
i hope u understood!!
perimeter of one side of cube is 4a
so u will get a as 20/4=5
so now u have one side
LSA=4a^2=4×25=100cm^2
volume=a^3=125cm^3
so u can just substitute to get them
i hope u understood!!
plz mark it as brainlist
Answered by
1
Given, Perimeter =20cm
and since a face of a cube is square
Then, Perimeter of square =4s
=4×s=20 (where s=side of the square)
=s=5cm
Now, LSA of cube = 4s²
=4×5²
=100cm²
Now, Volume of cube= s³
=5³
=125cm³
and since a face of a cube is square
Then, Perimeter of square =4s
=4×s=20 (where s=side of the square)
=s=5cm
Now, LSA of cube = 4s²
=4×5²
=100cm²
Now, Volume of cube= s³
=5³
=125cm³
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