Answer:
for the volume of the sphere its answer is 4πr³/3 which when converted to diameter will be 2(4πr³/3) as r=diameter/2 so diameter =2r
<span>Circumference is the distance around the outside of a circle (its perimeter!). Want a review of circle vocabulary terms (like pi, radius, and diameter)? ... of a circle with a diameter of 3 \greenD3 3start color greenD, 3, end color greenD. .... Suppose the radius of a circle is 5 \purpleD{5} 5start color purpleD, 5, end color purpleD</span>
1/2.h.(b1 +b2)which would mean 1/2x5.5x(7+11)
Answer is attached in photo.
1. Note that the number 1.8 consists of two parts 1 and 0.8.
2. The decimal 0.8 can be written as the fraction 
3. Add these two numbers:

4. Since 18=2·3·3 and 10=2·5, the fraction
can be simplified to the rational number
