△abc=1/2×800×(h+200)
=400(h+200)
=400h+80000
△pbc=1/2×800×h
=400h
よって影の部分の面積は
△abc-△pbc=(400h+80000)-400h
=80000[cm^2] …(答)
となります
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
ありがとうございます!!
(❁ᴗ͈ˬᴗ͈)ﾍﾟｺﾘ｡:.ﾟஐ⋆*