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3 years ago

A circular mirror measures 24 cm in diameter.

Mathematics

1 answer:

Basile [38]3 years ago

4 0

Answer:

The perimeter or circumference of a half mirror = 37.68 cm

Step-by-step explanation:

The diameter of circular measure = 24 cm

We know that the perimeter of a circular shape is called the 'circumference', with the formula

Circumference of a circle = C = 2πr

When the mirror is cut into half, the diameter gets half as well.

Thus, the diameter of a half mirror = 24/2 = 12 cm

We know that radius = r = diameter / 2 = 12/2 = 6 cm

Thus, the perimeter of half of the mirror = C = 2πr

= 2(3.14)6

= 37.68 cm

Therefore, the perimeter or circumference of a half mirror = 37.68 cm

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A prism with a triangular base has a volume of 432 cubic feet. The height of the prism is 8

Rashid [163]

Answer:

9 feet

Step-by-step explanation:

Given:

A prism with a triangular base has a volume of 432 cubic feet.

The height of the prism is 8.

The triangle base has a base of 12 feet.

Question asked:

The height of the triangular base of the prism = ?

solution:

Volume of triangular prism = $Area of triangle \times height$

$432 = Area of triangle \times8$

Dividing both side by 8

$54 = Area of triangle$

$54 =$ $\frac{1}{2} \times base \times height$

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Dividing both side by 12

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3 years ago

Find the value of x that will allow you to prove that CD below is parallel to EF if the measure of 21 is

irina1246 [14]

Answer:

Step-by-step explanation:

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