Answer:
B
Step-by-step explanation:
The formula for calculating the volume (V) of a cone is
V =
πr²h
where r is the radius of the base and h is the height
here r =
= 3 and h = 5
V =
π × 3² × 5
=
π × 9 × 5 = 15π m³ → B
Answer:
A = 39 m²
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Identify Variables</u>
Shorter Diagonal d2 = 3m + 3m = 6m
Longer Diagonal d1 = 9m + 4m = 13m
<u>Step 2: Find Area</u>
- Substitute into formula: A = 1/2(13m)(6m)
- Multiplication: A = 1/2(78m²)
- Multiplication: A = 39 m²
Answer:
<h2>

</h2>
Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about</h3>
- area of triangles
- area of rectangle
- PEMDAS
<h3>tips and formulas:</h3>
- rectangle opposite sides are equal
- area of rectangle:l×w
- area of triangle:½×h×b
<h3>let's solve:</h3>
the area of the rectangle is
4×7 in²
28 in²
the area of above triangle is
½×6×7 in²
3×7 in²
21 in²
the area of left side triangle is
½×5×4 in²
2×5 in²
10 in²
therefore,
the area of the polygon is
28+21+10 in²
<h3>59 in²</h3>