Question

find the surface area of this cube. 7 cm 84 cm² 420 cm² 343 cm² 294 cm²

Explanation:

Step1: Find area of one face

$\text{Area of 1 face} = 7 \times 7 = 49 \, \text{cm}^2$

Step2: Multiply by 6 (cube has 6 faces)

$\text{Total surface area} = 6 \times 49 = 294 \, \text{cm}^2$

Answer:

D. $294 \, \text{cm}^2$