the volume of cube is 729cm². find its surface area
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Answered by
12
Here is your answer...
Volume of cube = 729 cm³
a³ = 729m³
=> a = 9m
Surface area = 6a²
= 6(9)²
= 6×81
= 486 m²
☺☺
Volume of cube = 729 cm³
a³ = 729m³
=> a = 9m
Surface area = 6a²
= 6(9)²
= 6×81
= 486 m²
☺☺
Answered by
8
Hi there !!
Given,
Volume of cube = 729cm³
We know,
Volume of cube = side³
729 = side³
![side \: = \sqrt[3]{729}](https://tex.z-dn.net/?f=side+%5C%3A++%3D++%5Csqrt%5B3%5D%7B729%7D+ "side \: = \sqrt[3]{729}")
side = 9cm
The side of cube is 9cm
Surface area of a cube = 6(side)²
= 6(9)²
= 6 × 81
= 486cm²
Thus,
The surface area of a cube is 486cm²
Given,
Volume of cube = 729cm³
We know,
Volume of cube = side³
729 = side³
side = 9cm
The side of cube is 9cm
Surface area of a cube = 6(side)²
= 6(9)²
= 6 × 81
= 486cm²
Thus,
The surface area of a cube is 486cm²
Anonymous:
:-)
nice (-:
Thanks :-)
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