The amount Barbara earned this month is $1512.
<h3>How much did Barbara earn?</h3>
Percentage can be described as a fraction of an amount expressed as a number out of hundred.
Barbara's earnings = percentage commission x worth of goods sold
7% x 21,600
0.07 x 21,600 = $1512
To learn more about percentages, please check: brainly.com/question/25764815
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water the tank will hold = 14.583 gallons
<h3>
What is cuboid ?</h3>
- A cuboid is a three-dimensional or solid shape.
- A cuboid is a convex polyhedron that has six rectangular faces, eight vertices, and twelve edges.
- Another name for a cuboid is a rectangular prism. A cube is a cuboid with six square faces.
- The basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.
Given : A fish tank has a volume = 3360 cubic Inches.
The length of the tank is =14 inches
the width is = 12 inches.
The height of the tank is = 20 inches.
If one fluid ounce is = 1.8 cubic inches
Volume of tank = 14 * 12 * 20 = 3360 cubic inches
1.8 cubic inches = one fluid ounce
3360 cubic inches = 3360/1.8 fluid ounce
= 5600/3 fluid ounce
As we know,
1 gallons = 128 fluid ounces
water the tank will hold =( 5600/3 ) / 128
= 175 / 1 = 14.583 gallons
Therefore, water the tank will hold = 14.583 gallons
Learn more about cuboid
brainly.com/question/19754639
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2x+x+x+68=180
4x=112
x=28
Angle 1: 56 degrees
Angle 2: 28 degrees
Angle 3: 96 degrees
I hope that helps.
Give me points ahahahah thank you sir
95.7942857 pie form hope this is right got it off the internet so yeah
