Question

4. The edge of a cube is 20 cm. Find the total surface area
of the cube.​

Answer 1

Answer:

TSA = 6(20)²

= 6 × 400

= 2400cm²

Answer 2

$Given \: the \:edge \: of \:a \:cube (a) = 20\:cm$

$\boxed { \pink { Total \: surface \:area\:of \:the \: square = 6a^{2}}}$

$TSA = 6 \times (20\:cm)^{2} \\= 6 \times 400 \:cm^{2} \\= 2400\:cm^{2}$

Therefore.,

$\red { Total \: surface \:area\:of \:the \: square }$

$\green {= 2400\:cm^{2}}$

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