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Juliette [100K]
4 years ago
13

Pls help. Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)

Mathematics
1 answer:
givi [52]4 years ago
4 0
3.14(3(2) + 3(4))
3.14( 6 + 12) 
3.14(18)
=56.52
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Circle O and circle P are congruent. Given that arc AB is congruent to arc DE, what can you conclude from the diagram?
wlad13 [49]

Answer:

Central angle is equal in both circles

And the two triangles inscribed in circle is congruent.

Step-by-step explanation:

We have been given the two circles which are congruent O and P.

Ab is congruent to DE

So, the central angle of two circles will be equal circles being congruent.

And the two triangles AOB and EPD are congruent

Radius of the congruent circle is equal

Hence, OB=PD

             AB=DE

And ∠BOA=∠DPE

By SAS property ΔAOB ≅ΔEPD


5 0
4 years ago
Laura jog around the soccer field that 80m by 120m.how many yards does she goes around the field two times?​
exis [7]

A rectangle has two couples of equal sides, so a soccer fields has two 80-meters sides and two 120-meters sides.

This leads to a perimeter of

120+120+80+80=400 \text{ m}

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8 0
4 years ago
One bus can travel 194 miles in 4 hours and the second bus can travel 245 miles
sergij07 [2.7K]

Bus 1 : 194 miles / 4 hours = 48.5 miles / hour.

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Bus 2 is faster.

7 0
3 years ago
Can someone help me I really need it
Dennis_Churaev [7]

Answer:

The 3 lines are parallel.

Step-by-step explanation:

To draw the lines with the slope of 1/3 choose any point and mark it, then go up 1 square and right 3 squares and mark that point. Draw a line connecting those 2 points. Now choose another point and do the same thing. Then once more. Lines with the same slope are parallel.

Hope this helped! Please mark Brainliest.

8 0
3 years ago
a theater can seat 391 people .the number of rows is 6 less than the number of seats in each row.how many rows of seats are ther
Tema [17]
X(x-6) = 391
x2-6x-391 =0(x-23)(x+17)=0

since the number of seats should be positive,

x = 23

The number of rows is 23 - 6 = 17



( To check our work )

391 / 17 = 23

So, there are 17 rows of seats.
6 0
3 years ago
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