Jamie’s mother is making a quilt. the block shown below is made from a series of similar triangles

Step-by-step explanation:

To find B, C and D

we make use of Pythagoras theorem

since the line A= 8.5inch and looking at critically we can see the 3 inch meet it at the center (we divide 8.5 inch into 2 to give 4.25inch)

using Pythagoras theorem

hypothenus²= opposite²+adjacent²

4.25²= 3²+b²

18.0625 - 9 =b²

9.0625 = b²

b = √9.0625 = 3.0103986447≈3.01

for c

3² + 3.01² = C²

9 + 9.0601 = 18.0601 =C²

C = √18.0601 = 4.24971763768 ≈ 4.25

C is a portion of the longest side meaning it will need to be divided by 2 = 4.25/2 =2.125

to get D

2.125² = 1.5² + D²

4.25 = 2.25 +D²

4.25 -2.25 = D²

2 =D²

D= √2 = 1.41421356237 ≈1.41

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6