Answer:
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
