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4 years ago

A kite was broken into two triangles of the same size and shape .

Mathematics

2 answers:

babunello [35]4 years ago

7 0

ANSWER

Each triangle:40 cm²

Kite : 80cm²

EXPLANATION

The area of a triangle is

$\frac{1}{2}bh$

The height of the triangle is

$h = \frac{1}{2} (10)=5cm$

and the base is 16 cm.

The area of each triangle is

$= \frac{1}{2}(16)(5) = 40 {cm}^{2}$

2. The total area of the kite is 2 times the area of one triangle.

$= 2 \times 40 = 80 {cm}^{2}$

gizmo_the_mogwai [7]4 years ago

3 0

Answer:the answer is 8

Step-by-step explanation:

because they split up the triangle which makes the height a diffrent number so u divide by 2, 16 divided by 2 = 8.

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Find the volume of the following.<br> (Round to the nearest tenth if necessary)

BigorU [14]

V = 1/3 x B x H

= B = L x W

= V = 1/3 (L x W) H

= V = 1/3 ( 7 x 3 ) 8

= V = 1/3 (21) 8

= V = 1/3 (168 )

= V = 168/3

= V = 56in

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3 years ago

The radius of the base of a cylinder is increasing at a rate of 7 millimeters per hour. The height of the cylinder is fixed at 1

Ilya [14]

Answer:

The rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

Step-by-step explanation:

Given:

Rate of increase of base of radius of base of cylinder = 7 mm/hr

Height of cylinder = 1.5 mm

Radius at a certain instant = 12 mm

To find rate of change of volume of cylinder at that instant.

Solution:

Let $r$ represent radius of base of cylinder at any instant.

Rate of increase of base of radius of base of cylinder can be given as:

$\frac{dr}{dt}=7\ mm/hr$

Volume of cylinder is given by:

$V=\pi\ r^2h$

Finding derivative of the Volume with respect to time.

$\frac{dV}{dt}=\pi\ h\ 2r\frac{dr}{dt}$

Plugging in the values given:

$\frac{dV}{dt}=\pi\ (1.5)\ 2(12)(7)$

$\frac{dV}{dt}=252\pi$

Using $\pi=3.14$

$\frac{dV}{dt}=252(3.14)$

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Thus rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

6 0

3 years ago

a bag contains 5 red marbles 4 blue marbles and 6 yellow marbles if 3 marbles are selected in succession what is the probability

Alex

Answer:

5/243

Step-by-step explanation:

4/18 × 6/18 × 5/18 = 5/243

I think

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4 years ago

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Oxana [17]

The probability of the arrow will land on a section labeled with the number greater than 3 is $\frac{5}{8}$

Step-by-step explanation:

Given,

The spinner is divided into 8 sections say named 1, 2, 3, 4, 5, 6, 7, 8

To find the P : probability of the arrow will land on a section labeled with the number greater than 3

Formula

<u>P = (the number of possible outcomes) ÷ ( the number of total result)</u>

We will count the probability when the arrow land on either 4 or 5 or 6 or 7 or 8 = 5 times

Total number of result = 8

Hence the probability = $\frac{5}{8}$

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4 years ago

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Stels [109]

Answer:

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Step-by-step explanation:

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x = 18.072289156

Or if your wording meant 17% of a number is 15 then:

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8 0

3 years ago