Answer:
Step-by-step explanation:
Area of the coin:
So area of the ring:
A = 8.8 - 2.0 = 6.0 cm²
Answer:
4.15
Step-by-step explanation:
d = 2.8cm, a = 1.4cm
a = πr2
a = 3.14 * 1.42
a = 3.14 * 1.96
a = 6.15cm2
6.15 - 2 = 4.15
The area of the nickel ring is 6.15cm2
÷you need to find how many parts there are ; 4 + 3 = 7
you then need to divide the number by the parts ; £56 ÷ 7 = £8
1 part = £8
4:3, 4 parts : 3 parts.
4 x £8 = £32
3 x £8 = £24
4:3 = £32:£24
to check your answer ;
add both parts of your final answer , £32 + £24 = £56