keem3247
17.04.2021 •
Mathematics
A training field is formed by joining a rectangle and two semicircles. The rectangle is 87 m long and 69 m wide. What is the length of a track running around the field? Us the value 3.14 for pi, do not round the answer.
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Ответ:
390.66 meters
Step-by-step explanation:
perimeter = 2(87) + 3.14(69)
= 174 + 216.66
= 390.66
Ответ:
12x + 15y=34
x=34/12 = 17/6
y=34/15
-6x + 5y=3
x=3/-6 = 1/-2
y= 3/5
Step-by-step explanation: