Answer:
1. 16cm
2. 26dm
3. 20mm
4. 30dm
5. 78cm
Step-by-step explanation:
1. Perimeter of the square = 4cm + 4cm + 4cm + 4cm = 16cm
2. Perimeter = 8dm + 8dm + 5dm + 5dm
= 26dm
3. Perimeter of rectangle = 3mm + 3mm + 7mm + 7mm = 20mm
4. Perimeter of triangle = 8dm + 12dm + 10dm = 30dm
5. Perimeter = 23cm + 23cm + 16cm + 16cm = 78cm
<h3>Hope it is helpful...</h3>
Diameter = 30
radius = 15
area = pi x 15 x 15 = 225pi
circumference = 30pi
Answer:
<h2>A = 40 cm²</h2>
Step-by-step explanation:
The formula of an area of a triangle:

<em>b</em><em> - base</em>
<em>h</em><em> - height</em>
<em />
We have <em>b = 8cm, h = 10cm</em>.
Substitute:

Answer:

Step-by-step explanation:
We need to find the derivative
of the vector function :

In order to find
, we are going to differentiate each of its components ⇒
We can write the following ⇒
⇒

Let's differentiate each function to obtain
:
⇒
⇒

Now with
:
⇒

With
:
⇒
⇒

Finally we need to complete
with its components :