72∘R=...∘F=...∘C.

Pertanyaan

begin mathsize 14px style 72 degree text R end text equals... degree text F end text equals... degree text C end text end style.

I. Kumaralalita

Master Teacher

Mahasiswa/Alumni Universitas Gadjah Mada

Jawaban terverifikasi

Jawaban

 begin mathsize 14px style 72 degree straight R equals 194 degree straight F equals 90 degree straight C end style.

Pembahasan

Perhatikan perhitungan berikut ini.

Ingat:

Jenis termometer Reamur

Titik tetap bawah = begin mathsize 14px style 0 degree straight R end style

Titik tetap atas = begin mathsize 14px style 80 degree straight R end style

Selisih = begin mathsize 14px style 80 degree minus 0 degree equals 80 degree end style

 

Jenis termometer Celcius

Titik tetap bawah = begin mathsize 14px style 0 degree C end style

Titik tetap atas = begin mathsize 14px style 100 degree straight C end style

Selisih = begin mathsize 14px style 100 degree minus 0 degree equals 100 degree end style

 

Jenis termometer Fahrenheit

Titik tetap bawah = begin mathsize 14px style 32 degree straight F end style

Titik tetap atas = begin mathsize 14px style 212 degree straight F end style

Selisih = begin mathsize 14px style 212 degree minus 32 degree equals 180 degree end style

 

Maka:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator degree straight R minus titik space tetap space bawah space degree straight R over denominator degree straight C minus titik space tetap space bawah space degree straight C end fraction end cell equals cell fraction numerator selisih space degree straight R over denominator selisih space degree straight C end fraction end cell row cell fraction numerator 72 degree minus 0 degree over denominator degree straight C minus 0 degree end fraction end cell equals cell fraction numerator 80 degree over denominator 100 degree end fraction end cell row cell fraction numerator 72 degree over denominator degree straight C end fraction end cell equals cell 4 over 5 end cell row cell fraction numerator 72 degree times 5 over denominator 4 end fraction end cell equals cell degree straight C end cell row cell 18 degree times 5 end cell equals cell degree straight C end cell row cell 90 degree end cell equals cell degree straight C end cell end table end style

Didapatkan begin mathsize 14px style 72 degree straight R equals 90 degree straight C end style.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator degree straight R minus titik space tetap space bawah space degree straight R over denominator degree straight F minus titik space tetap space bawah space degree straight F end fraction end cell equals cell fraction numerator selisih space degree straight R over denominator selisih space degree straight F end fraction end cell row cell fraction numerator 72 degree minus 0 degree over denominator degree straight F minus 32 degree end fraction end cell equals cell fraction numerator 80 degree over denominator 180 degree end fraction end cell row cell fraction numerator 72 degree over denominator degree straight F minus 32 degree end fraction end cell equals cell 4 over 9 end cell row cell fraction numerator 72 degree times 9 over denominator 4 end fraction end cell equals cell degree straight F minus 32 degree end cell row cell 18 degree times 9 end cell equals cell degree straight F minus 32 degree end cell row cell 16 2 degree plus 32 degree end cell equals cell degree straight F end cell row cell 194 degree end cell equals cell degree straight F end cell end table end style

Didapatkan begin mathsize 14px style 72 degree straight R equals 194 degree straight F end style.

Jadi, begin mathsize 14px style 72 degree straight R equals 194 degree straight F equals 90 degree straight C end style.

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