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3 years ago

Pls help i will mark you as brainliest if u get it right

Mathematics

2 answers:

PIT_PIT [208]3 years ago

5 0

Answer:

9 in³

Step-by-step explanation:

The volume (V) of the pyramid is calculated as

V = $\frac{1}{3}$ Ah ( A is the area of the base and h the perpendicular height )

A = 3 × 3 = 9 in² ← area of base and h = 3, thus

V = $\frac{1}{3}$ × 9 × 3 = 3 × 3 = 9 in³

Lemur [1.5K]3 years ago

3 0

Answer:

27 cubic in

Step-by-step explanation:

area of base (3x3) x height of the pyramid (3)

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3 years ago

the perimeter of an equilateral triangle is 39 centimeters. What is the length of an altitude of the triangle ?

victus00 [196]

Answer: $h = 11.26cm$

Step-by-step explanation:

Equilateral triangle has equal sides, let the side be $xcm$ , then the perimeter is $3x$

Therefore:

$3x = 39$

$x = 39/3$

$x = 13cm$

To find the altitude , we will apply Pythagoras theorem , that is

$13^{2}=h^{2}+6.5^{2}$

Therefore:

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8 0

2 years ago

The length of a rectangle is eight more than triple the width. If the perimeter is 168 inches, find the dimensions.

defon

Answer:

P= 2(3W + 7) + 2(W) = 110.

P= 6W + 14 + 2W = 110.

= 8W + 14 = 110.

= 8W = 110 - 14 = 96

W = 96/8 = 12- inches.

Now solve for (L) by L = 3W + 7 = 3(12) + 7 = 36 + 7 = 43- inches

7=43 inches if this help.can u mark me brainliest

6 0

1 year ago

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2 years ago

Read 2 more answers

How do you use the keyboard on the computer to write exponents and other algebraic symbols

ICE Princess25 [194]

You will have to type it into Microsoft word first, type a number or algebraic expression into a Word document. Press the "Ctrl," "Shift" and "=" keys on your keyboard to turn on the Superscript mode. Enter another number or expression signifying the exponent.

Hope this helps! :)

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3 years ago