43 × 15 = 645.
First, set up the long multiplication.
Second, calculate 3 × 5, which is 15. Since 15 is two-digit, carry the first digit 1 to the next column.
Third, calculate 4 × 5 which is 20. Since 21 is two-digit, carry the first digit 2 to the next column.
Fourth, bring down the carry digit of 2.
Fifth, calculate 3 × 1, which is 3.
Sixth, calculate 4 × 1, which is 4.
Seventh, calculate 215 + 430, which is 645.
Eighth, therefore, 43 × 15 = 645.
Or.. an easier way is to use a calculator. They always come in handy when doing multiplication.
Answer:
14i
Step-by-step explanation:
2√-49 = 2√i²7² = 2·i·7 = 14 i
You can use the same pattern for the others.
another one:
5√-20 = 5√i²2²5 = 5·i·2√5 = 10i√5
45*8=360+80=440 therefore he will get paid $440
Answer:
49.45
Step-by-step explanation:
Answer:
176.74 cm^2
Step-by-step explanation:
Area of a circle is πr^2
r= 7.5
π= 3.142
Area=3.142× 7.5^2
= 3.142 × 56.25
= 176.74 cm^2
Hence the area if the circle is 176.74cm^2