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yanalaym [24]
3 years ago
14

Please help me with these 2 questions!! Will mark Brainliest :)

Mathematics
2 answers:
svetlana [45]3 years ago
5 0

Step-by-step explanation:

for the first circle, the radius is 14

therefore, circumference=2πr

= 2x3.14x14

=87.92 approximately 88

for the second circle, the radius is 4

therefore, circumference= 2πr

= 2x3.14x4

=25.12

Evgen [1.6K]3 years ago
4 0

Answer:

43.96

Step-by-step explanation:

circumference=2 pi r

=2*3.14*7

=43.96

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He has too much for 4 cans. He has 5 3/5
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Please help to fill in the fractions 2/8=.../4
mote1985 [20]
1 because if you divide 2/8 by 2, you will get 1/4.
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3 years ago
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PLEASE:
Tju [1.3M]

Answer:

63.59 in²

Step-by-step explanation:

The formula to find the area of a square: a², where a is the side.

The formula to find the area of a circle: πr², where r is the radius (diameter ÷ 2), and the pi is alterable (3.14 or 3.142 or 22/7).

1) Find the diameter of the circle. The side of a square is the diameter.

a²

a = √81

a = 9

2) Plug the values into the formula of the area of a circle. 9 ÷ 2 = 4.5 (radius).

= 3.14 x 4.5²

= 3.14 x 20.25

= 63.585

3) Round off the result to the nearest hundredth.

= 63.59

3 0
3 years ago
Dose anyone know how to solve this?
sesenic [268]

Answer:

AC is double the length of AB

so AC = 12

Step-by-step explanation:

mark me as brainliest ❤️

8 0
3 years ago
△ABC ≅ △DEF, EF = x 2 - 7, and BC = 4x - 2.
Artist 52 [7]

Answer:

Therefore the value of x is 5.

Step-by-step explanation:

Given:

△ABC ≅ △DEF,

EF = x 2 - 7, and

BC = 4x - 2.

To Find:

the values of x. = ?

Solution:

△ABC ≅ △DEF      ........Given

If two Triangles are congruent then the Corresponding Parts of Congruent Triangles are Congruent.

∴ BC ≅ EF   ...................CPCTC

Substituting the values we get

4x-2=x^{2}-7\\x^{2}-4x-5=0

Now By Factorizing we get

x^{2}-5x+x-5=0\\x(x-5)+1(x-5)=0\\(x+1)(x-5)=0\\x+1=0\ or\ x-5=0\\x=-1\ or\ x=5\\x\ cannot\ be\ negative\\\therefore x=5

Therefore the value of x is 5.

8 0
4 years ago
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