rosarioemily580
23.09.2021 •
Mathematics
In the opening hour of a new store, a bell rang every 2 min and lights flashed every 3 min. If the store opened at 10, at what time did both events happen at the same time
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Ответ:
684
Step-by-step explanation:
Let's find rectangular areas first.
16*24 + 10*16 (adding both areas of both rectangles)
284+160 = 444 sq cm
Now lets find the side triangles.
b*h/2 is the equation
24*10 = 240 (remove 1/2 because you have 2 triangles, 1/2*2 = 1)
240 sq cm + 444 sq cm = 684 sq cm.