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Cloud [144]
3 years ago
15

Find the area of a trapezoid with bases of 15cm and 6 cm and a height of 1/5cm

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
8 0
Area = 0.5 x (a+b) x h

= 0.5 x (15cm + 6cm) x 1/5cm
= 0.1 x 21cm
=2.1cm^2  (2.1 centimeters squared)
telo118 [61]3 years ago
5 0
Area is 0.5 x h x(a+b)

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A hamster runs at 17 centimeters per second in a wheel of radius 15 centimeters how fast will the wheel spin in revolutions per
dolphi86 [110]

Answer:

10.82 revolutions per mintue

Step-by-step explanation:

First we need the circumference of the cirkel. As you may know the formula for that is 2×pi×r, with r as the radius of the cirkel. So 2×pi×15=30pi centimeters or 94.24 centimeters. Now we will calculate the fraction of 17 centimeters on 94.24 centimeters. 17/94.24=0.18. That is how fast the wheel will spin. To get it in minutes we now do: 0.18×60=10.82 revolutions per minute.

4 0
3 years ago
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Paha777 [63]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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Tpy6a [65]

Given:

\angle a and \angle b are complementary angles.

\angle a=32^\circ

To find:

The measure of \angle b.

Solution:

According to the definition of the complimentary angles, the sum of two complementary angles is always 90 degree.

It is given that, \angle a and \angle b are complementary angles. So,

\angle a+\angle b=90^\circ

32^\circ+\angle b=90^\circ

\angle b=90^\circ-32^\circ

\angle b=58^\circ

Therefore, the measure of \angle b is 58°.

3 0
3 years ago
Solve the proportion to determine the value of x4x/15=60/x
frozen [14]
4x/15 = 60/x
4x^2 = 900
x^2 = 225
x = 15 
4 0
3 years ago
A plumber charges $50 to make a house call. He also charges $25 per hour for labor. If the bill from the plumber is $162.50.
blsea [12.9K]
4.5 hrs because 162.50-50 = 112.50
112.50/25= 4.5
3 0
3 years ago
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