И как я пойму какой пример!???
0.8+0.9=1.7
0.06-0.01=0.05
0.4+0.06=0.46
5-0.2=4.8
0.14+0.03=0.17
1.5-0.4=1.1
2.1+0.6=2.7
2-1.2=0.8
0.02+0.05=0.07
0.1+0.04=0.14
1-0.8=0.2
0.06+0.3=0.36
0.24-0.11=0.13
0.3+1.7=2
4.5-0.2=4.3
0.04+0.1=0.14
0.46-0.12=0.34
7.9-4=3.9
0.28+0.12=0.4
0.09-0.03=0.06
0.04+0.5=0.54
0.38-0.16=0.22
0.45+0.55=1
6.8-2=4.8
0.06+0.04=0.1
10-4.2=5.8
5-0.1=4.9
7.2+3.02=10.22
9.13+0.45=9.58
3.7+4.5=8.2
12.5-0=12.5
13.13-8=5.13
7.5+12=19.5
0.001+5.2=5.201
16-0.9=15.1
Ответ:
на 15,7 см см, 74.575 см²
Пошаговое объяснение:
С1 = 2πR = 12π см
C2 = 2πr = 7π см
ΔC = 12π - 7π = 5π см ≈ 15,7 см
S1 = πR² = 36π см²
S2 = πr² = 12,25π см²
S = 36π - 12,25π = 23,75π см²
π ≈ 3,14
S ≈ 23,75*3,14 см² = 74.575 см²
16 - 4² и 2⁴
81 - 9² и 3⁴
625 - 25² и 5⁴
1.) Умножим две дроби:
<span>4360</span> × <span>3043</span> = <span>43·3060·43</span> = <span>12902580</span>
2.) Упростим дробь:
<span>12902580</span> = <span>1·12902·1290</span> = <span>1<span>2</span></span>