Answer:
if area is given than use formula=πd²/4
if circumference=πd
Answer:
= 0.15384615384 = 15.38%
Step-by-step explanation:
There are 4 7 cards and 4 queen cards so,
+
= 
let's divide the whole by the sum of its ratios, namely let's 160 ÷ (8+12), and then distribute accordingly.

Answer:
a) 15, b) 36
Step-by-step explanation: