Write a function rule for the area of a triangle with a base of 2 m less than 4 times its height. what is the area of the triangle when its height is 8 m?

Question

Kristian Graham

Mathematics

9 August, 16:00

Write a function rule for the area of a triangle with a base of 2 m less than 4 times its height. what is the area of the triangle when its height is 8 m?

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Answers (1)

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Dillon Ruiz · Answer 1

A=1/2bh

b=4h-2

sub that for b

a = (1/2) (4h-2) (h)

a = (2h-1) (h)

a=2h²-h

a (h) = 2h²-h

a (8) = 2 (8) ²-8

a (8) = 2 (64) - 8

a (8) = 128-8

a (8) = 120m²