180-129= 51
angle 4 is equal to angle 12 so missing angle 12= 51°
Answer:
4.76cm
Step-by-step explanation:
Given data
circumference= 15cm
The expression for circumference is
C= 2πr
substitute and solve for r
15= 2*3.14*r
r= 15/ 2*3.14
r=15/ 6.28
r= 2.38 cm
Hence the diameter is
D= 2r
D= 2*2.38
D=4.76cm
Answer:55mm
Explain:I know
It will become a square of 5x8 so answer is 40