18. At the Muttart Conservatory, the tropical pyramid has 4 congruent triangular faces.
The base of each face has length 25.7 m
and the slant height of the pyramid is 27.2 m.
a) Sketch and label the pyramid.
b) What is the height of the pyramid to
the nearest tenth of a metre?
Plz answer fast I will mark the brainlist

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it

answerim :

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step-by-step explanation:

im not sure but my dad knows

answer: the prove is mentioned below.

step-by-step explanation:

an isometric rigid transformation is a transformation of the plane that preserves lengths and angles.    

that is, the pre-image and the image under a rigid transformation will be congruent.

here, given: cb ║ ed and cb ≅ ed

prove that: δ cbf ≅ δ edf

since, cb ║ ed

therefore, by the alternative interior angle theorem,

∠fcb ≅ ∠fed

∠fbc ≅ ∠ fde

and, cb ≅ ed ( given)

therefore, the angles and sides are persevered after transformation.

thus, by the definition of isometric rigid transformation,

δ cbf ≅ δ edf