Geometry b unit 6: surface area and volume, lesson 10: surface area and volume unit test? the first question on this test is "use euler's formula to find the missing number. vertices: 13 edges: 26 faces: ? with the answer options a. 14 b. 15 c. 16 d. 17 (i only showed to first question so someone would give me the correct answers.)

The correct option is (B) 15

Euler's formula states the relationship between the number of Faces, Edges and Vertices of any polyhedron. It is given as

where

From the question

so

Learn more about Euler's formula here: link

B

Step-by-step explanation:

Euler's formula for polyhedra states that

F + V - E = 2

where F is faces, V is vertices and E is edges

Substitute the values given and solve for F, that is

F + 13 - 26 = 2

F - 13 = 2 ( add 13 to both sides )

F = 15 → B

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

24

step-by-step explanation: