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Katen [24]
3 years ago
5

1.) What is the area of the triangle? 10.6 cm 10.6 cm 16 cm

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
7 0

Answer:

A = 55.63 cm^2

Step-by-step explanation:

Let a,b,c be the lengths of the sides of a triangle. Heron's formula states that:

Area = √(p (p−a) (p−b) (p−c))    

where p is half the perimeter, or    

(a+b+c) / 2

So lets start by finding p:

(10.6 + 10.6 + 16) / 2

p = 18.6

Now lets substitute p and the other values into our equation:

A = √ (18.6 (18.6−10.6) (18.6−10.6) (18.6−16))

So let's plug this in to our calculators

A = √ (3095.04)

A = 55.633083682284 cm^2

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Find the surface area of a cylinder. Solve this formula for h. Then find the height of the cylinder if the surface are is 251.2
mezya [45]

Answer:

The formula for 'h' is \frac{S.A.}{2\pi r}-r.

The height of the cylinder is 3 in.

Step-by-step explanation:

Given,

Surface Area of Cylinder = 251.2 sq. in.

Radius = 5 in

We have to find out the height of the cylinder.

Solution,

We know that the Surface area of cylinder is given as;

Surface\ Area = 2\pi r(h+r)

Here 'r' is the radius and 'h' is the height.

We have to solve this for 'h'.

\frac{S.A.}{2\pi r}=h+r\\\\h=\frac{S.A.}{2\pi r}-r

Hence The formula for 'h' is \frac{S.A.}{2\pi r}-r.

Now we solve for 'h'.

Since h=\frac{S.A.}{2\pi r}-r

On putting the given values, we get;

h=\frac{251.2}{2\times3.14\times5}-5=8-5=3\ in

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identify the initial amount a and the rate of growth r (as a percent) of the exponential function H(t) = 175 (1.028)t. evaluate
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From the given exponential function, we have that:

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<h3>What is an exponential function?</h3>

An increasing exponential function is modeled by:

A(t) = A(0)(1 + r)^t

In which:

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  • r is the growth rate, as a decimal.

In this problem, the function is:

H(t) = 175(1.028)^t

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When t = 5, we have that:

H(5) = 175(1.028)^5 = 201

You can learn more about exponential functions at brainly.com/question/25537936

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