Question

The edge of a cube is 19 cm. What is the total surface area of the cube (in cm²)?

• A. 2186
• B. 2156
• C. 2166
• D. 2176

Answer 1

Answer:

C. 2166

Edge of cube = 19 cm

Use formula

Total surface area of a cube:
$6a^2$

Substitute value

$6 \times 19^2 = 6 \times 361$

Multiply

$6 \times 361 = 2166$

Final Answer: 2166 cm²