Question

please help meeeeeeeeeeeeeeeeeee fast ​

Answer 1

Answer:

Step-by-step explanation:

ANSWER:-

• We know that

• Total Surface Area of a Cube is $6a^{2}$

• Where a is any side of cube
• a is equal because sides of a cube is always equal and cube is a 3D replica of a square.

• Volume of a cube is $a^3$.

We are given the surface area.

$6\times a^2= 294 \ cm^{2}\\a^2= \frac{294}{6}$

$a^2=49\\ \\\boxed{a=7 \ cm}$

So, finding volume

$\sf{Volume} = (a)^3 \implies (7)^3 \implies 343 \ cm^3$

Some Important Formulas to Note:-

• $\sf{ LSA \ or \ Lateral \ Surface \ Area \ of \ a \ cube \ 4a^2}$.
• $\bf{TSA \ or \ Total \ Surface \ Area \ of \ a \ cube \ 6a^2$.
• $\tt{Volume \ of \ a \ cube \ is \ a^3}$.
• Cube is a 3D figure
• It is a 3D figure of a Square
• Examples are a Dice, we generally see a cheese cube, which we eat, so it is also a cube
• A cuboid is a 3D figure of a Rectangle
• Sphere is 3D figure of an Ellipse or Oval.

Answer 2

ANSWER

Surface area of a cube = 6 × Side² or 6s²

6s² = 294 cm²

s² = 294/6

s² = 49

s = √49

$\therefore$s = 7cm

Volume of cube = s³

Volume of cube = 7³ cm³

$\therefore$Volume of cube = 343 cm³

$\therefore$Your answer = 343 cm³