1. D
2.B
3.A
4. D i think i can’t really see that question
5.C
I think the answer is 12.8 mm
Answer:
Goodluck my dude.
Step-by-step explanation:
Given:
Radius of the cone = 5 ft
Slant height of the cone = 21 ft
To find:
The surface area of the cone
Solution:
Surface area of cone formula:

where r is the radius and l is the slant height.




The surface area of the cone is 130π square feet.
Answer:

Step-by-step explanation:
It is given that a box contains 2 dozen pairs of contact lenses ,of which 8 pairs are tinted.
1 dozen = 12 units
Total pairs of contact lenses 
Tinted pairs of contact lenses = 8
Pairs of contact lenses not tinted = 24 - 8 = 16
If a pair of contact lenses is drawn at random from the box, then we need to find the probability that it is not tinted.



Therefore, the required probability is 