Answer:
The diameter will be given by 50 cm ÷ 3.142 = 15.9134 cm
The radius will be 15.9134 ÷2 = 7.9567 cm or about 7.96 cm
The area of a circle is given by \pi × square of radius
Area = 3.142 × 7.96×7.96 = 199.0821 square cm
Answer:
If there are 125 girls, and the ratio is boys to girls, then you can divide 125 by 5 to get the multiplication factor. This would be 25. Now you can multiply 25 by 4 to get how many boys were in the gym, which would be 100. To get back to your original ratio, you can divide 100/125 by 25 on top and bottom to get 4:5, or 4/5. :)
Step-by-step explanation:
Answer:
Between -1 and 0
Step-by-step explanation:
Answer:
V = kr²h
Step-by-step explanation:
Given that V varies jointly with r² and h, then the equation relating them is
V = kr²h ← k is the constant of variation
Note that joint variation involves the product of the joint quantities
