Question 7:
Diameter = 6.2 cm so Radius = 3.1 cm
A=πr² = 3.14 × 3.1² = 30.1754 cm² = 30.18 cm²
Question 8:
Circumference = 2πr
16π = 2πr
therefore 16 = 2r so r = 8cm
-7 is the answer to this question
Not enough info, its part c of a question that has more to go off of
7720 + 80x = 3200 + 120x
I think this is correct. Hope it helps!
One of them will be given 4 biscuits and the other will be given 24.
