7. 3.14(12^2 - 10^2)=3.14(144-100) = 3.14(44)=138.16
8. A = piR^2 = 50.24. R^2 = 50.24/3.14 = 16. R = 4cm
9a) Perimeter of square is 4*18 = 72. Perimeter of circle is 2*pi*r. r=9in
perimeter of circle is then 2*3.14.9 = 56.52. Difference is 72-56.52 = 15.48
9b) Area of square is 18^2 = 324.
Area of circle is 3.14(9^2) = 254.34. Difference is the unshaded part
324-254.34 = 69.66in^2
5% = 32 therefore 5 * 20 = 100% so 32 * 20 = 640 fuses were inspected
Answer:
3+4+3+4+3+4+3+4=28
Step-by-step explanation:
the permiter is 28in
Height = 3 cubes
Width = 5 cubes
Depth = 4 cubes
Number of Cubes = 3*4*5 = 60
Each cube is .2 inches on each side
So, it's volume = 1 * .6 * .8 = .48 cubic inches
Double - Check
Each cube is .2*.2*.2 =
<span>
<span>
<span>
0.008
</span>
</span>
</span>
cubic inches
There are 60 cubes so the volume =
60 * .008 = .48 cubic inches CORRECT !!
Answer:
y
Step-by-step explanation:
A constant in an equation for example the equation 3x-7=5, the constant would be 7 and 5, the coefficient would be 3, the variable would be x and lastly, the subtraction sign would be the operator. So the answer would be y.
