tolong di bantu kak nomor 3-5 terimakasih

no 4
rumus celsius k reamur
4/5 x c
rumus celsius ke farenheit
9/5 x c + 32
A. 40 C
40 C = 4/5 × 40 = 32 R
40 C = 9/5 ×40 +32
=72+32
=104 F

B. 39.5 C
39.5 C = 4/5 × 39.5 = 31.6 R
39.5 C= 9/5 × 39.5 + 32
=71.1 + 32 = 103.1 F

c. 40.6 c
40.6 c = 4/5 × 40.6 = 32.48 R
40.6 c = 9/5 × 40.6 +32
=73. 08 +32 = 105.08 F