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2 years ago

Regroup through thousands9 tens 10 ones= hundreds

Mathematics

1 answer:

iren2701 [21]2 years ago

4 0

Can help me plzzzzzz...!!!! f) i) dont need

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Pls help me answer this

igor_vitrenko [27]

Answer: 30 cm

Step-by-step explanation:

The volume of the composite solid is 17000 cm³. To find h, we must first subtract the volume of the half cylinder from the composite volume.

From the figure, AE = MK, and so the radius of the half cylinder is 10cm. The volume of the half cylinder is thus $\frac{1}{2}$ the volume of a cylinder. The volume of a cylinder is πr²h. So a half cylinder is 1/2 πr²h. This gives us a volume of $\frac{1}{2} (\frac{22}{7})(10 cm)^2(28 cm) = 4400 cm^3$ .

Thus, the volume of the right prism is 17000cm³ - 4400cm³ = 12600cm³. Consider the cross-section ABKJ. If we multiply this by AE, we'll have the volume of the right prism.

The ABKJ is a trapezoid so it's area is $\frac{1}{2}(AJ + BK) \cdot AB$ . Thus the volume of the right prism is $\frac{1}{2}(AJ + BK) \cdot AB \cdot AE$ . This gives us $\frac{1}{2}(28 + 14) \cdot h \cdot 20 = 12600$ , and thus h = 30 cm.

3 0

1 year ago

As bases mq e np de um trapézio medem 42 cm e112 cm, respectivamente. se o ângulo mqp é o dobro do ângulo pnm, então o lado pq m

snow_lady [41]

Firstly, we will draw diagram

we will draw line qq'

which will make mqq'n as parallelogram

and we know that opposite sides of parallelograms are always equal

so, we get

$mq=nq'$

we are given

mq=42

so,

$nq'=42$

we can see that q' lies on np

so, we can write as

$np=nq'+q'p$

we are given

np=112

so, we can plug these values

$112=42+q'p$

$q'p=112-42$

$q'p=70$

now, we can see that

triangle qpq' forms isosceles triangle

so, we get

$pq=q'p$

$pq=q'p=70$

so,

$pq=70$ ............Answer

3 0

2 years ago

How could you increase the mass of a wooden block?

damaskus [11]

<span>None of the above. The mass does not change if you change the gravitational constant (moving to Jupiter or Moon), only the weight changes. By cutting it in half you decrease the mass, you do not increase it.</span>

4 0

2 years ago

What is the approximate distance between the points (-5,1) and (-2,3) on a coordinate grid? Show me an example please

yaroslaw [1]

Answer:

$d=\sqrt{13}\ units$ or $d=3.61\ units$