cuquerob21

2023-03-13

Find the side of a cube whose surface area is $294c{m}^{2}$.

A)7 cm

B)8 cm

C)9 cm

D)6 cm

A)7 cm

B)8 cm

C)9 cm

D)6 cm

Macas6tl

Beginner2023-03-14Added 3 answers

The right answer is B 7 cm

We know

Surface area of cube $=294c{m}^{2}$

$\because $ Surface area of cube $=6\times sid{e}^{2}$

$\Rightarrow 6\times Sid{e}^{2}=294$

$\Rightarrow Side=\sqrt{\frac{294}{6}}$

$=\sqrt{49}$

$\Rightarrow $ Side=7 cm

We know

Surface area of cube $=294c{m}^{2}$

$\because $ Surface area of cube $=6\times sid{e}^{2}$

$\Rightarrow 6\times Sid{e}^{2}=294$

$\Rightarrow Side=\sqrt{\frac{294}{6}}$

$=\sqrt{49}$

$\Rightarrow $ Side=7 cm