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juin [17]
3 years ago
14

Can someone help me with these three? You can get 30 points

Mathematics
1 answer:
lyudmila [28]3 years ago
4 0

Answer:

1 is 4

2 is 3

3 is 6

Step-by-step explanation:

tofu tu ugh uh runs

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ABCD is a square of side 3, and E and F are the mid points of sides AB and BC respectively. What is the area of the quadrilatera
Dima020 [189]
Given : - Square ABCD with side 3.  E and F as midpoints.
To find : - area of EBFD

Solution : - We have, area of square ABCD = 3 x 3 = 9 units.

Thus, (ar)EBFD = ar ABCD - ar DAE - arDCF

arDAE = 1/2 x base x height

=1/2 x 1.5 x 3 ( AE is 1/2 of AB = 1.5, DA is altitude)
= 2.25

arDFC = 1/2 x base x height 
= 1/2 x 1.5 x 3 (FC is 1/2 of BC, DC is altitude)
= 2.25

Thus, (ar) EBFD = arABCD - arDAE - arDCF

= 9 - 2.25 - 2.25

= 4.5 units.

Thus, area of quad EBFD is 4.5 units.  
7 0
3 years ago
What is the perimeter of this triangle? 15 cm 5 cm 25 cm 10 cm
Lady_Fox [76]

Answer:

55

Step-by-step explanation:

Add 15+5+25+10 which is 55

hope this helps! :)

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3 years ago
90oriX9 un rezultat va rog
bogdanovich [222]
The answer is 333.423 hope this helps u

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What is 260,987 rounded to the nearest ten thousand
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260,987 rounded to the nearest ten thousand is 260,000
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