The following gives 28 in multiplication tables (for positive integers):
1x28
2x14
4x7
7x4
14x2
Of course you can go into -28x-1 etc. but I feel this is adequate. If you'd like more just say.
If you would like to find the number which belongs in the blank to complete the square, you can calculate this using the following steps:
f(x) = 5(x^2 - 4x + a) + 15
a ... the number = ?
<span>x^2 - 4x + a = (x - 2)^2 = x^2 - 4x + 4
</span>a = 4
The correct result would be 4.
Answer:
<h2>
36.48 mm^2</h2>
Step-by-step explanation:
The area formula of a circle is:
A=pi*r^2
a semicircle is half the area of a circle:
A=0.5*pi*r^2
now lets find that area:
A=0.5*pi*r^2
A=0.5*pi*8^2
A=0.5*pi*64
A=<u>32pi </u>mm^2
A= around 32*3.14
A= around 100.48 mm^2
Now, lets find the area of the triangle:
it is half the product of the diameter and radius:
A=0.5*8*(8+8)
A=4*16
A=64 mm^2
Now lets find the approximate area of the shaded region:
Asc-At=Ashaded
Ashaded=100.48-64
Ashaded=36.48 mm^2
