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eastonstelter
18.09.2019 •
Mathematics
Bis the midpoint of ac, d is the midpoint of ce. bd=10, and ae =2x. find the length of ce if cd =3x
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Ответ:
Since B is midpoint of AC and D is midpoint of CE, therefore, BD is parallel to AE and BD = 0.5 AE
AE = 2 BD = 2 x 10 = 2x
Therefore, x= 10
D is the midpoint of CE and CD = 3x, therefore CE = 6x where x = 10
Based on this, CE = 6 x 10 = 60 units of length
Ответ:
A corda deve ter um comprimento mínimo de 80 cm.
The string should have a minimum length of 80 cm.
Step-by-step explanation:
Espera-se que a corda seja colada em todo o contorno da moldura quadrada.
Isso significa que a cadeia precisa cobrir pelo menos todo o perímetro da moldura quadrada pelo menos uma vez.
Perímetro de um quadrado = 4L
L = comprimento lateral do quadrado.
O comprimento lateral da moldura quadrada = 20 cm
Comprimento mínimo da corda necessária = Perímetro da moldura quadrada = 4 × 20 = 80 cm.
Espero que isto ajude
English Translation
Sofia is going to glue a piece of string to the outline of a square frame 20 cm from the side. How long should this string be?
Solution
The string is expected to be glued all around the outlne of square frame.
This means the string needs to at least cover the whole perimeter of the square frame a minimum of one time.
Perimeter of a square = 4L
L = side length of the square.
The side length of the square frame = 20 cm
Minimum length of the string required = Perimeter of the square frame = 4 × 20 = 80 cm.
Hope this Helps