Объяснение:
А) 1. 7×7×4 = 196 2. 7×7×2 = 98
3. 7×7×6 = 294
Б) 1. 10×10 + 6×10 + 8×10 = 240
2. (6 × 8) /2 × 2 = 48
3. 48 + 240 = 288
В) 1. 2,25×8×2 + 1,75×8×2 = 36 + 28 = 64
2. 2,25×1,75×2 = 7,875
3. 64 + 7,875 = 71,875
Объяснение:
А) 1. 7×7×4 = 196 2. 7×7×2 = 98
3. 7×7×6 = 294
Б) 1. 10×10 + 6×10 + 8×10 = 240
2. (6 × 8) /2 × 2 = 48
3. 48 + 240 = 288
В) 1. 2,25×8×2 + 1,75×8×2 = 36 + 28 = 64
2. 2,25×1,75×2 = 7,875
3. 64 + 7,875 = 71,875