Which of the following formulas would find the surface area of a right cone where s is the slant height, r is the radius, la is the lateral area, ba is the base

LA=πrs

Surface Area=πrs+πr²

Step-by-step explanation:

We are given the slant height(s) and the radius(r) of the cone.

We have to find the formula for Lateral Area(LA) of the cone and surface area of cone.

Lateral Area of cone is given by: πrl

where r is the radius and l is the slant height

Here l=s

Hence, Lateral Area(LA)= πrs

Surface area of cone= lateral area of cone+area of base

                                  = πrs+πr²

The total Surface Area of a right Cone is the sum of the area of its base and the lateral (side) surface.

The formula for the total surface area of a right cone is

Where r is the radius, and l is the slant height

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.

vertical=18cm horizontal=18cm hypotenuse=25.5

step-by-step explanation: