Subtract using the number line. −2/3−(−1 1/3) a) −1 2/3 b) −2/3 c) −1/3 d) 23

Volume is length times width times height so
20 times 8 times 30 which is 4,800
surface area is ph (p is perimeter of base), h is height.
so perimeter would be length+length+width+width so 20+20+8+8 which is 56. so multiply 56 times 30 which is 1680. hope this !

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The answer is 32cm. 45-13=32