Answer:
- diameter: 16 cm
- circumference: 16π cm ≈ 50.27 cm
Step-by-step explanation:
The diameter is twice the radius:
d = 2r = 2(8 cm)
d = 16 cm
The diameter is 16 cm.
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The circumference is pi times the diameter.
C = πd
C = π(16 cm)
C = 16π cm ≈ 50.27 cm
The circumference is 16π cm, about 50.27 cm.
Answer:

Step-by-step explanation:
Solving For 
Step 1: Multiplying 28.96 with 1 we get 2896
Step 2: add 0 and the multiply 28.96 with 4 we get 115840
Step 3: add 2 0's and the multiply 28.96 with 9 we get 2606400
Now adding all the three answer we get 2725136
Now decimal point of number and multiplier both are after 2 digit from units place so we will add decimal point 4 digit from unit place in final answer
hence we get 272.5136
Solving For 
Step 1: Multiplying 63.7 with 5 we get 3185
Step 2: add 0 and the multiply 63.7 with 2 we get 12740
Now adding all the three answer we get 15925
Now decimal point of number and multiplier both are after 1 digit from units place so we will add decimal point 2 digit from unit place in final answer
hence we get 159.25
Answer:
4
Step-by-step explanation:
AB =
= 4
Answer:
12
Step-by-step explanation:
It is the greatest commen factor
Answer:
68.5
Step-by-step explanation:
Angles DEC and DAC are right angles, so their sum is 180°. DECA is a quadrilateral, which has a sum of interior angles equal to 360°. Then angle ACE is the supplement of angle D:
∠ACE = 180° -43° = 137°
Inscribed angle ABE has half the measure of central angle ACE, so we have ...
x° = 137°/2
x = 68.5