Answer:
Step-by-step explanation:
Surface area is the sum of areas of 4 triangles.
<u>Each triangle has:</u>
<u>Area of each triangle:</u>
<u>Surface area:</u>
The answer is b
Answer: Oslo was colder
Step-by-step explanation: The other one was -5 and this won is -12 so Oslo is colder!! Hope it helped! :)