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marishachu [46]
3 years ago
14

What’s is the surface area of this

Mathematics
1 answer:
Marysya12 [62]3 years ago
6 0
2.8 multiplied by 2.8 to find the surface area of the base which is 7.84
4*1/2*2.8*5.5 to find the surface area of all four triangular faces which is 30.8
Plus them together 7.84 plus 30.8 which is 38.64
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A certain recipe requires 4 1/5 cups of flour and 2 3/7 cups of sugar. If 4/9 of the recipe is to be made how much sugar is need
Jobisdone [24]
To find the amount of sugar needed for 4/9 of a batch, just multiply the standard batch (2 3/7 cups) by 4/9, for a result of 1 5/63 cups of sugar.

To find the amount of flour needed for a triple batch, multiply the base amount of flour, or 4 1/5, by three, to get 12 3/5 cups of flour.
7 0
3 years ago
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s344n2d4d5 [400]

Answer:

Q= 5c

Step-by-step explanation:

8 0
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What is the volume of a hemisphere with a radius of 3.1 in, rounded to the nearest tenth of a cubic inch?
victus00 [196]

FORMULA:

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ANSWER:

We are given a hemisphere of radius 3.1inches.

So, Volume = 2/3 × 3.14 × (3.1)³

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6 0
3 years ago
Limit of x^2-81/x+9<br> As x goes toward -9
Semmy [17]
Hello,

Use the factoration

a^2 - b^2 = (a - b)(a + b)

Then,

x^2 - 81 = x^2 - 9^2

x^2 - 9^2 = ( x - 9).(x + 9)

Then,

Lim (x^2- 81) /(x+9)

= Lim (x -9)(x+9)/(x+9)

Simplity x + 9

Lim (x -9)

Now replace x = -9

Lim ( -9 -9)

Lim -18 = -18
_______________

The second method without using factorization would be to calculate the limit by the hospital rule.

Lim f(x)/g(x) = lim f(x)'/g(x)'

Where,

f(x)' and g(x)' are the derivates.

Let f(x) = x^2 -81

f(x)' = 2x + 0
f(x)' = 2x

Let g(x) = x +9

g(x)' = 1 + 0
g(x)' = 1

Then the Lim stay:

Lim (x^2 -81)/(x+9) = Lim 2x /1

Now replace x = -9

Lim 2×-9 = Lim -18

= -18




7 0
3 years ago
find the area of a parrellelogram whose base is of length 25 cm and the corresponding altitude is of length 8.4 cm​
Free_Kalibri [48]

Answer:

Check the above photo and do the sum

6 0
2 years ago
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