ella3714
23.09.2019 •
Mathematics
1. the width of a rectangular cardboard is 24 cm and its area is 960 cm². find the
perimeter of the cardboard.
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Ответ:
128 cm
Step-by-step explanation:
if the length = a
a × 24 = 960
so a = 960 ÷24 =40
The perimeter = (the width + the length) × 2 = (24 +40 )×2 = 64 ×2 =128
Ответ: