Drag each equation to show if it could be a correct first step to solving the equation
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Answer:
Step-by-step explanation:
Width of rectangle = 15 cm
width of rectangle is equal to the radius of each semicircle.
radius of each semicircle (r) = 15 cm.
Diameter of each semicircle = 30 cm
Length of rectangle = 3 x 30 = 90 cm.
So to find how many tenths, or 1/10's, there are in four fifths, or 4/5, divide 4/5 by 1/10.
Now, remember that <u>dividing by a number is equivalent to multiplying by its reciprocal</u>. To find the reciprocal, just flip the numerator and denominator around. In this case, 1/10 would become 10/1. Flip 1/10 to its reciprocal, change the sign to multiplication, and multiply numerators with numerators and denominators with denominators:
<u>In short, there are 8 tenths in four fifths.</u>