Work out the circumference of the circle of 6mm

Answer :Radius = 6 mmCircumference = 2πr= 2×6mm×π=12π mm= 12×3.14 mm= 37.68 mm

The expression of this would be 3.75x+y= 23

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.