We are gonna divide the explanation by each number.
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• Part A: Triangle with Half-Circle
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~ First, identify the given:
Base of Triangle = 4cm
Height of Triangle = 4cm
Diameter of Half-Circle = 4cm
~ Second, identify the formula:
>> We need to find both Half-Circle and Triangle's area and add them together so that we can find the area of the composite shape.
=>To find the Triangle's area, we will use this formula:
A=½×base×height
=>To find the Half-Circle's area, we will use this formula and divide it by 2 since its only the half:
A=πr²÷2
~ Third, solve for the areas:
>> Triangle:
A = ½ × 4 cm × 4 cm
A = 2 cm × 4 cm
A=8 cm²
>> Half-Circle (Rounded off to hundredths):
A = π(2 cm)² ÷ 2
A ≈ 12.566.. cm² ÷ 2
A ≈ 6.28 cm²
~Fourth,addbothareas:
A = 8 cm² + 6.28 cm²
A = 14.28 cm²
~ Finally, we have our answer:
A = 14.28 cm²
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•PartB:Square withQuarter-Circle
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~ First, identify the given:
Side of square = 10 m
Radius of circle = 10 m
~ Second, identify the formula:
>> We need to find both shapes' areas and add them together so that we can find the area of the composite shape.
=> To find the Square's area, we need to use this formula:
A = Side × Side
=>To find the Quarter-Circle's qrea, we need to uwe the formula of q regulqr circle and divide it by 4 since it's only ¼ of a circle:
A=πr²÷4
~ Third, solve for the areas:
>> Square:
A = 10 m × 10 m
A = 100 m²
>> Quarter-Circle (Rounded off to hundredths):
A = π(10 m)² ÷ 4
A = 314.159.. cm² ÷ 4
A = 78.54cm²
~Fourth,addbothareas:
A = 100 m² + 78.54 m²
A = 178.54 m²
~ Finally, we have our answer:
A = 178.54 m²
OtherInformation:
A Composite shape is a conjoined shape that consists of 2 or more basic shapes.
#KeepLearningWithBrainly!
- CLrrkk~
3 votes Thanks 5
ThisJayden
Ang galing mo naman po sa computation! sana ako din mahusay sa math, biro lang hihi. By the way, if you do have the time to answer some questions here, you can try to be one if Brainly Hero!
ThisJayden
Since, I saw all of your answers, na pa w o w ako, kasi yung computations mo and you also gave them another information or justification!
ThisJayden
If you are interested to be one of Brainly Hero, just search or click this link: https://blog.brainly.ph/the-brainly-heroes/
Answers & Comments
Step-by-step explanation:
a.
area of 2 triangle
A=[(b×h)/2]×2
A=b×h
A=4×2
A=8cm²
area of half circle
A =(πr²)/2
=(π2²)/2
A=6.28CM²
TOTAL AREA = 14.28CM²
b.
A=S²
=10²
=100m²
A=(πr²/)4
=(π10²)4
=78.54
Total area =178.54m²
Verified answer
~ Good evening! Here, let me help you!
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COMPOSITE SHAPES
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Answer:
Step-by-step explanation:
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• Part A: Triangle with Half-Circle
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~ First, identify the given:
~ Second, identify the formula:
>> We need to find both Half-Circle and Triangle's area and add them together so that we can find the area of the composite shape.
=> To find the Triangle's area, we will use this formula:
=> To find the Half-Circle's area, we will use this formula and divide it by 2 since its only the half:
~ Third, solve for the areas:
>> Triangle:
>> Half-Circle (Rounded off to hundredths):
~ Fourth, add both areas:
~ Finally, we have our answer:
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• Part B: Square with Quarter-Circle
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~ First, identify the given:
~ Second, identify the formula:
>> We need to find both shapes' areas and add them together so that we can find the area of the composite shape.
=> To find the Square's area, we need to use this formula:
=> To find the Quarter-Circle's qrea, we need to uwe the formula of q regulqr circle and divide it by 4 since it's only ¼ of a circle:
~ Third, solve for the areas:
>> Square:
>> Quarter-Circle (Rounded off to hundredths):
~ Fourth, add both areas:
~ Finally, we have our answer:
Other Information:
#KeepLearningWithBrainly!
- CLrrkk ~