Answer:
a: 500in squared
Step-by-step explanation:
A=(a+b)/2 x h.
19+31=50
50/2=25
25×20=500
64 is the number of a perfect cube
Answer:
Step-by-step explanation:
Surface area of small box = 2(4×10) + 2(4×14) + 2(10×14)
= 2(40+56+140)
= 472 cm²
Surface area of large box = 2(4×20) + 2(4×14) + 2(20×14)
= 2(80+56+280)
= 832 cm²
832 - 472 = 360 cm²
Answer: C
