A closed tin of milk has diameter 10cm and height 16cm. Find the total surface area of the tin. (Take πt to be 22÷7) and make the subject of the formula
AAAaannndd the bot gets it wrong yet again!
how can the math be good until just the final step?
so screwed up ...
Total surface area = 2πr(r + h)
= 2(22/7)(5)(5 + 16)
= 2(22/7)(5)(21)
= 2(22/7)(105)
= 440 cm²