Homework it’s too hard

Step-by-step explanation:

length=4×28=112 mm=11.2 cm

three centers form an equilateral triangle each side=2×28=56mm=5.6 cm

to find the height

h=√(5.6²-2.8²)=2.8√3

width=2.8+2.8√3+2.8=5.6+2.8√3=2.8(2+√3)

area=11.2×2.8(2+√3)≈117.03 7cm²≈117 cm²

-27

Step-by-step explanation:

Given: f(x)= -x^2+10x-16, g(x)= |11-2x^2|

f(9)= -(9)^2+10(9)-16

= -7

g(-5)= |11-2(-5)^2|

=39

Solve: 2[f(9)]-1/3[g(-5)]

= 2[(-7)] - 1/3[39]

= -27