Answer:
9.8
Step-by-step explanation:
Given that a survey of sports fan was conducted counting no of persons whose favourite was football, baseball, basketball and hockey.
Given that 49 like football, 35 baseball, 11 basket ball and 5 hockey
We have to find ratio of football fans to hockey fans.
We find that hockey fans are 5 and football fans are 49
Ratio of football fans to hockey fans =49/5
=9.80
The ratio means if 9.80 football favourite persons are there there would be only one person whose favourite is hockey.
The answer to the missing value is X = 3
Given:
The radius of the base of the given cone = 5 cm
The slant height of the cone = 19 cm
To find the surface area of the given cone.
Formula
The surface area pf the given cone is,
where, r be the radius and
l be the slant height.
Now,
Taking, r = 5, l = 19 and π = 3.14 we get,
sq cm
or, sq cm
or, sq cm
Rounding off to the nearest square centimeter, we get;
Hence,
The surface area of the cone is 377 sq cm.
