isabellasosa312 isabellasosa312

19-04-2018
Mathematics

contestada

3) What radius of a circle is required to inscribe an equilateral triangle with an area of 270.633 cm2 and an altitude of 21.65 cm? (round to nearest tenth)

A) 10.8 cm
B) 14.4 cm
C) 15.4 cm
D) 16.4 cm

Respuesta :

takemyholegroup takemyholegroup

01-05-2018

14.4 cm

First, find side lengths,

A = 12bh
270.633 = 12b(21.65)
b = 25

Thus, 25 is the side lengths of the equilateral triangle.

To find the radius use,

r = a33
r = 2533
r = 14.43

Answer Link

joelogan76p0m6g4 joelogan76p0m6g4

06-05-2018

B) 14.4 is the correct answer

Answer Link

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