I wrote it out on paper and uploaded the answer for you. Let me know if you have any questions.
Answer:
1/14
Step-by-step explanation:
1/2+3/7=7/14-6/14=1/14
Answer:
1.22 x 
Step-by-step explanation:
1,220,000 would be...
1.22 x 10^6
9514 1404 393
Answer:
288 km²
Step-by-step explanation:
The surface area is the sum of the area of the square base and the area of the four triangular faces.
SA = (10 km)² + 4(1/2)(10 km)(9.4 km) = 288 km²
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The area formulas for a square and a triangle are ...
A = s² . . . . area of a square of edge length s
A = 1/2bh . . . . area of a triangle with base b and height h
