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Minchanka [31]
3 years ago
13

What’s the area of a trapezoid?

Mathematics
1 answer:
S_A_V [24]3 years ago
6 0

Answer:

For a trapezoid, A = (a+b/2)h

Step-by-step explanation:

I attached a picture which is better.

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A solid right circular cone of diameter 14cm and height 8cm is melted to form a hollow sphere. If the external diameter of the s
pshichka [43]

Answer:

Step-by-step explanation:

Diameter of cone=14 cm

so, Radius of cone= 7cm

     Height of cone= 8cm

     ∴ Volume of cone= 1/3*pi*r^2*h

                                 =1/3*pi*49*8 cm^3

In Sphere, External Radius R=5cm

         Let, Internal Radius = r  

   Volume of Sphere = External Volume- Internal Volume

                                 = 4/3*pi*R^3-4/3*pi*r^3

                                 =4/3*pi[R^3-r^3]

                                 =4/3*pi[5^3-r^3]

But During Conversion Volume Remains Same

    So, Volume of Sphere=Volume of Cone

           4/3*pi[125-r^3]= 1/3*pi*49*8

           4[125-r^3]=49*8

             [125-r^3]=49*2

              r^3=125-98

              r^3=27

              so, r =3 cm

          Internal Radius= 3cm

   So, Internal Diameter=3*2= 6cm

PLS MARK BRAINLIEST

5 0
3 years ago
Which of these coordinates would represent the intercepts of the graph of the function f(x)=3x-9
4vir4ik [10]
(3,0) and (0,-9)
Explanation: type the equation in a graphing calculator and the answer is the points where the line crosses the x and y axis

7 0
3 years ago
Read 2 more answers
Find the difference between points (3,5) and (4,6) to the nearest tenth
miss Akunina [59]

Answer:

1,2,3,4,5,6,7,8,9,10

4,5,6,7,8,9,10

Step-by-step explanation:

5 0
4 years ago
Identify all of the following solutions of square root of x plus 10 end root minus 4 equals x.
maxonik [38]

Answer:

The RIGHT answer is:  x = −1

Step-by-step explanation:

3 0
4 years ago
Which is greater, 4 tenths and 2 hundredths or 2 tenths and 4 hundredths? Explain.
kirill [66]
2 tenths and 4 hundreds because if u combine then it would be 420 where as the first one would be 240
5 0
4 years ago
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