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3 years ago

(2) The triangle has an area of 7 & 7/8 cm2 and a base of 5 & 1/4 cm. What is the

Mathematics

2 answers:

Andrew [12]3 years ago

5 0

Answer:

h = 3 cm

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = $\frac{1}{2}$ bh ( b is the base and h the height )

Here A = 7 $\frac{7}{8}$ = $\frac{63}{8}$ ← expressed as an improper fraction

and b = 5 $\frac{1}{4}$ = $\frac{21}{4}$ , thus

$\frac{1}{2}$ × $\frac{21}{4}$ × h = $\frac{63}{8}$ , that is

$\frac{21}{8}$ h = $\frac{63}{8}$

Multiply both sides by 8 to clear the fractions

21h = 63 ( divide both sides by 21 )

h = 3

MariettaO [177]3 years ago

3 0

Answer:

H = 3cm

Step-by-step explanation:

sorry i just know the answer

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denis23 [38]

Answer:

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$y=x^2-2x+3$

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Step-by-step explanation:

The function:

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Location of vertex relative to x-axis: below

So, the parabola doesn't depict a rain gauge off the ground

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Location of vertex relative to x-axis: two units above

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3 years ago

The figure is made up of a cone and a cylinder.

professor190 [17]

Answer:

38 mm³

Step-by-step explanation:

Calculate the volume of the cylinder and of the cone separately.

1. Volume of cylinder

The formula for the volume V of a cylinder is

V = πr²h

Data:

D = 4 mm

h = 2 mm

Calculations:

a. Calculate the radius

D = 2r

r = D/2 = 4/2 = 2 mm

b. Calculate the volume

V = 3.14 × 2² × 2 = 25.12 mm³

2. Volume of cone

The volume for the volume (V) of a cone is

V = ⅓πr²h

V = ⅓ × 3.14 × 2² × 3

V = 18.85 mm³

3. Calculate the total volume

V = 25.12 mm³ + 12.57 mm³ = 38 mm³

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