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dybincka [34]
3 years ago
9

Jenni bakes two rectangular cakes to put on top of each other. Each cake is 9 in wide, 13 in long, and 2 in high. How many squar

e inches of frosting will Jenni need to frost both cakes?
Mathematics
1 answer:
omeli [17]3 years ago
3 0

Answer:

Step-by-step explanation:

we will need to find the volume of the frosting

V=l*w*h

V=2(13*2*9)= 468 in^2 of frosting for the cake

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Given an equilateral triangle that has an area of 1959 cm2. What is the length of its sides?
Nina [5.8K]
Equilateral
equi means equal
lateral means sides

all sides are equal
triangle has 3 sides

perimiter=side1+side2+side3
side1=side2=side3


area=1/2 times base times height
base=side
draw a line down the middle of te tiangle so you get 2 right triangles side by side
1/2base is one leg
base is hypotonuse
height is unknown
equilateral means that it is a 30-60-90 triangle with  hypotonuse equal to 2x, height=x√3, bottom is x
1/2 times base times height=1959
1/2 times x times x√3=1959
multiply both sides by 2
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legnth of each side is 2\sqrt{ \frac{3918}{ \sqrt{3} } }cm or about 95.12222 cm
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3 years ago
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