Diagram 3.3 shows a remote control airplane (RC airplane). Diagram 3.3
Suggest modification to the batteries of the RC airplane so that it can fly higher and longer in the
air based on the aspects given.
(i) Voltage used:
Reason:
[2 marks]
(ii)Internal resistance, r of the battery :
Reason:
[2 marks]
(iii) Type of the battery used :
Reason:
[2 marks]

Conductionhope this .

Not sure but i think it's b.

When calculating percentage we need two numbers. one number represents total amount of certain thing and another number represents partial number of that thing. then we divide those two numbers.in this problem total amount represents total number of weeds growing on some surface. partial number represents chicory.percentage = partial / total * 100%percentage = 29 / 98 * 100%percentage = 29.6%our calculation is closest to answer b) so this is our correct answer.