Answer:
C) 80
Step-by-step explanation:
x + 80 + 20 = 180
x + 100 = 180
x = 80
Answer:
273.62 cm^2
Step-by-step explanation:
so surface area of a rectangular prism is 7*6 7*2 and 6*2 (this can be used with different numbers, i dont know how to explain it well) this would come out to 68
the trangular prism doesnt have a direct formula, but there are calculators on the internet you can look up, but it would come out to 205.62,
add the numbers together and you would get 273.62cm^2
Answer:
638
Step-by-step explanation:
its 638, not 639 because its above 638.5
the value of 3x +2y if x=5 and y=4 is 23
C. the area of the original square is greater