4 years ago

The minute hand clock has a length of nine inches. How much area had the minute hand covered in thirty minutes?

1 answer:

6 0

About 127 inches. use the formula: r squared times 3.14 divided by 2. aka the formula to find area of a circle divided by two because it only covered 30 mins

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The surface area of this triangular pyramid, whose base and lateral faces are congruent equilateral triangles, is __ square inch

DedPeter [7]

Answer:

The surface area is equal to $390\ in^{2}$

Step-by-step explanation:

The surface area of the triangular pyramid is equal to the area of its four triangular faces

In this problem

$SA=4[\frac{1}{2}(b)(h)]$

we have

$b=15\ in$

$h=13\ in$

substitute the values

$SA=4[\frac{1}{2}(15)(13)]=390\ in^{2}$

4 0

3 years ago

Read 2 more answers

A circular mirror has a diameter of 12 inches what is the are in square inches of the mirror?

pochemuha

The area of a circle is <u>(pi) x (the circle's radius)</u>²

The circle's radius is (1/2) of (its diameter).

Area = (pi) x (12/2 inches)² =

(pi) x (6 inches)² =

(3.14) x (36 square inches) = <em>113 square inches</em> (rounded)

6 0

3 years ago

Juliette and her two brothers spent $45.75 on flowers for their grandmother. Each person will chip in the same amount. How much

labwork [276]

They will pay 10.25

4 0

3 years ago

n a right triangle, the sum of the squares of the leg lengths is equal to the square of the hypotenuse length.

hammer [34]

That is true. It is the Pythagorean Theorem.

3 0

3 years ago