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maw [93]
3 years ago
11

Emma is making a scale drawing of her farm using the scale 1 cm = 2.5 ft. In the drawing, she drew a well with a diameter of 0.5

centimeter. Which is the closest to the actual circumference of the well?
Mathematics
2 answers:
NeX [460]3 years ago
8 0

Answer:

Circumference of the well = 3.93 ft

Step-by-step explanation:

Emma is making a scale drawing of her farm using the scale 1 cm = 2.5 ft

She drew a well with a diameter of 0.5 cm.

We have to calculate the actual circumference of the well.

Since the scale factor used by Emma was 1 cm = 2.5 ft

So by this scale actual diameter of well will be

0.5 cm =  \frac{2.5}{2}=1.25ft

Now radius of the well will be r=\frac{Diameter}{2}

r=\frac{1.25}{2}=0.625 ft

Since circumference of a circle P = 2πr

Therefore P = 2×(3.14)×(0.625) = 3.93 ft

Answer is " circumference of the well is 3.93 ft "

xz_007 [3.2K]3 years ago
3 0
1cm = 2.5 ft
0.5 cm = 1.25 ft

Circumference = πD
Circumference = π(1.25)
Circumference = 3.93 ft

Answer: 3.93 ft
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