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An illustration shows a cone that rests flat on the circular base. The visible circumference of the base and sides are in solid lines. The circumference of the base at the back that is not visible is indicated by a dashed line. Parts are labeled. A large point is marked in the center of the base. A solid line passes through this point and extends from one edge of the base to the other to indicate the diameter of the base. The line is labeled d equals 10 centimeters. The right side of the cone extending from where the diameter meets the edge of the base up to the point of the cone shows a slant height of 13 centimeters. A dotted line extends from the interior of the vertex of the cone down to the point marked in the center of the base. A right angle is indicated where the dotted height line meets the diameter line in the center of the base.
Find the length of the height of the cone.
7 answers
The slant height of the cone (13 centimeters) represents the hypotenuse of a right triangle, with the height of the cone as the opposite side and half of the diameter (d/2 = 5 centimeters) as the adjacent side.
Using the Pythagorean theorem:
height^2 + (d/2)^2 = slant height^2
height^2 + 5^2 = 13^2
height^2 + 25 = 169
height^2 = 169 - 25
height^2 = 144
Taking the square root of both sides, we get:
height = √144
Therefore, the length of the height of the cone is 12 centimeters.
Given l=30 in. , w=20 in. , h=18 in. , and x=36.1 in. , find the length of d . Round the answer to the nearest tenth. (1 point)
From the given information, we know that the length of the rectangular prism (l) is 30 inches, the width (w) is 20 inches, and the perpendicular height (x) is 36.1 inches.
Using the Pythagorean theorem, we can set up the following equation:
d^2 = l^2 + w^2
Substituting the given values:
d^2 = 30^2 + 20^2
d^2 = 900 + 400
d^2 = 1300
Taking the square root of both sides to solve for d:
d = √1300
d ≈ 36.06 inches
Therefore, the length of d is approximately 36.1 inches when rounded to the nearest tenth.
Given:
l = 30 in.
w = 20 in.
h = 18 in.
x = 36.1 in.
To find the length of d, we can use the Pythagorean theorem:
d^2 = h^2 + (l - x)^2
Substituting the given values:
d^2 = 18^2 + (30 - 36.1)^2
d^2 = 324 + (-6.1)^2
d^2 = 324 + 37.21
d^2 = 361.21
Taking the square root of both sides to solve for d:
d ≈ √361.21
d ≈ 19.01 in.
Therefore, the length of d is approximately 19.0 inches when rounded to the nearest tenth.