Question

The transportation department has to put a railing along the outer curve of this road. The road is 20 feet wide. What is the length of the outer curve to the nearest foot? Use the value = 3.14

Answer 1

the length of the outer curve is 86 feet

Answer 2

Answer:

L = 85.85

Explanation:

figure relate to this question is attache below

so, radius for outer curve is  70 ft

we know that

$arc\ length = radius \times angle$

angle is given as 70 degree, convert degree to radian  = $70 \times \frac{\pi}{180}$

$L = 70 \times [70 \frac{\pi}{180}]$

L = 85.85