You can simplify the fraction to get 2/5. If you convert this into a decimal you will get 0.4, so D is your answer.
Answer:
1. 322.01
Step-by-step explanation:
Formula: v=pi X r^2(h/3)
Since the radius of the semi circle is 10 cm then the diameter is 20 cm, when folded, its circumference is now 20, given the circumference find the radius of the cone. i guess
Volume = 1/3 πr2 (l2﹣r2)1/2
circumference = 20 cm = πD
D=6.363636364
Radius = 6.363636364/2 = 3.181818182
l = 10
vol = 100.51cm3
curved s.a = πrl
=99.96cm2
Answer: the length of the base is 17.7
Step-by-step explanation:
