2 years ago

Divide any 4 polygons into triangles by dividing them into diagonals.

1 answer:

7 0

Step-by-step explanation:

The most remarkable and important property of triangles is that any polygon can be split up into triangles simply by drawing diagonals of the polygon. This fact forms the basis for understanding why the interior angles of polygons add up to 180(n-2) degrees.

hope it helps

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the radius ???? of a sphere is expanding at a rate of 70 cm/min. The volume of a sphere is ????=43????????3 and its surface area

enyata [817]

Answer:

$\frac{dV}{dt}=1120 \pi cm^3/min$

Step-by-step explanation:

We are given that

Radius of sphere expanding at the rate= $\frac{dr}{dt}=70 cm/min$

Volume of sphere= $V=\frac{4}{3}\pi r^3$

Surface area of sphere= $S=4\pi r^2$

We have to determine the rate at which the volume is changing with respect to time at r= 2 cm.

$V=\frac{4}{3}\pi r^3$

Differentiate w.r.t time

$\frac{dV}{dt}=4\pi r^2\frac{dr}{dt}$

Substitute the values then we get

$\frac{dV}{dt}=4\pi (2)^2(70)=1120 \pi cm^3/min$

Hence, the rate at which the volume of sphere is changing is given by

$\frac{dV}{dt}=1120 \pi cm^3/min$

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What fractions added equal 14/15

yKpoI14uk [10]

Answer:

There are 3 equivalent fractions 28 /30, 42/45,56/6

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3 years ago

Jodi favorite clothes include 4 t-shirts, three pairs of jeans, and 2 pairs of sandals. How may days in a row can she wear a dif

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3 years ago

Read 2 more answers

In the circle, CP=x and PD=y. If xy=28 and AP=2, then what is PB?

mario62 [17]

We know that
<span>When two chords intersect each other inside a circle, the products of their segments are equal
</span>
so
CP*PD=AP*PB
x*y=2*PB-----------> 28=2*PB----------> PB=14

the answer is
PB=14

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3 years ago