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3 years ago

I need help with this problem

Mathematics

1 answer:

Akimi4 [234]3 years ago

6 0

Answer:

264 cm^2

Step-by-step explanation:

Area of a trapezoid = 1/2 (b1+b2) *h

The area of the large trapezoid

b1 = 14 b2 = 25 h = 10+12 = 22

A = 1/2 (14+25) *22 = 429 cm^2

The area of the unshaded trapezoid

b1 = 8 b2 = 25 h = 10

A = 1/2 (8+25) *10 = 165 cm^2

To find the area of the shaded region, take the area of the large trapezoid and subtract the unshaded trapezoid

429 - 165 =264 cm^2

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3 years ago

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insens350 [35]

Answer:

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General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

Step-by-step explanation:

Step 1: Define

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Step 2: Define variables

a = 4

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c = -1

Step 3: Find roots

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Exponents: $x=\frac{-9\pm\sqrt{81-4(4)(-1)} }{2(4)}$
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