The decorative block shown in Fig. is made of two solids a cube and a hemisphere. The base of the block is a cube with edge \(7\ cm\), and the hemisphere fixed on the top has a diameter of \(4.2 cm\). Evaluate the total surface area of the block. (Take \(\pi=\frac{22}{7}\)
Total surface area of the block \(=\) \(cm^2\).
Answer variants:
312.86
307.86
310.86
317.86