Answer:
18c-30d+36
Step-by-step explanation:
-(5 + (-11.3)) + (-4.3)
-(5 - 11.3) + (-4.3)
Distribute -1 into the parenthesis:
-5 + 11.3 + (-4.3)
-5 + 11.3 - 4.3
Add:
6.3 - 4.3
Subtract:
2
Permafrost occurs in areas where the temperature of the ground remains below the freezing mark for two years or more. About a quarter of the Northern Hemisphere's landscape fits this definition. Most of the world's permafrost is found in northern Russia, Canada, Alaska, Iceland, and Scandinavia.
Answer:7857.14cm square
Step-by-step explanation:
surface area of a sphere =4*22/7*25*25=7857.14cm square
