.1 is the rational number
Answer:
The area is 88.39 cm
Step-by-step explanation:
Here, we want to find the area of the semicircle given that the diameter of the semi circle is 15 cm
We start by getting the radius
Mathematically r = D/2
= 15/2 = 7.5
Area of semicircle is area of circle/2
= (pi * r^2)/2
= (22/7 * 7.5^2)/2 = 88.39 cm
Answer:

Step-by-step explanation:

= 91
*
= 
Answer:
a-10 - 6/a+2
Step-by-step explanation:
Answer:
−12/17
Step-by-step explanation:
This is the answer because:
1) First, convert 2 5/6 to an improper fraction
2 5/6 = 17/6
2) Next divide -2/1 and 17/6
3) The reciprocal of 17/6 is 6/17
4) -2/1 ÷6/17 is -12/17
Hope this helps!