Math Formula's - 7th Grade Math

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Quizzes Created: 1 | Total Attempts: 764
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  • 1/9 Questions

    Perimeter Of A Square

    • S^2
    • 4s
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About This Quiz

Read and find out :D! * ^ is a exponent. Wen u type an answer and pi is involved use (pi)!

Math Formulas - 7th Grade Math - Quiz

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  • 2. 

    Area of a trapezoid

    • 1/2h(b1+b2)

    • Bh

    • Lwh

    • Uhmmm

    • (pi)r^2

    Correct Answer
    A. 1/2h(b1+b2)
    Explanation
    The formula for finding the area of a trapezoid is 1/2 multiplied by the height of the trapezoid, multiplied by the sum of the lengths of its parallel sides (b1 and b2). This formula is derived from splitting the trapezoid into a rectangle and two right triangles, and then finding the area of each shape and summing them.

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  • 3. 

    Area of a triangle

    • Bh

    • Lwh

    • Bh

    • (pi)r^2

    • 1/2bh

    Correct Answer
    A. 1/2bh
    Explanation
    The formula for finding the area of a triangle is 1/2bh, where b is the base of the triangle and h is the height. This formula is derived from the fact that the area of a triangle is equal to half the product of its base and height. Therefore, the correct answer is 1/2bh.

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  • 4. 

    Area of a parallelogram

    • Bh

    • Lwh

    • ???

    • Does that exist?

    Correct Answer
    A. Bh
    Explanation
    The formula for finding the area of a parallelogram is given by multiplying the base (b) by the height (h). Therefore, the correct answer is bh. The other options mentioned, lwh and "does that exist?", are incorrect and do not represent the correct formula for finding the area of a parallelogram.

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  • 5. 

    Area of a rectangle

    Correct Answer
    a= lw
    lw
    A=lw
    Explanation
    The given expressions "a= lw", "lw", and "A=lw" represent the formula for finding the area of a rectangle. In this formula, "l" represents the length of the rectangle and "w" represents the width. The expression "a= lw" indicates that the area of the rectangle is equal to the product of its length and width. The expression "lw" is another way of representing the same formula. Lastly, "A=lw" is a shorthand notation where "A" represents the area and is equal to the product of the length and width of the rectangle.

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  • 6. 

    What is the formula of Circumference? 

    Correct Answer
    2(pi)r, (pi)d
    Explanation
    The formula for finding the circumference of a circle is given by 2(pi)r or (pi)d. Here, "r" represents the radius of the circle and "d" represents the diameter. Both formulas are correct and can be used interchangeably to calculate the circumference. The first formula, 2(pi)r, calculates the circumference by multiplying the radius by 2 and then multiplying it by pi. The second formula, (pi)d, calculates the circumference by directly multiplying the diameter by pi. Therefore, both formulas yield the same result and can be used depending on the given information.

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  • 7. 

    Area of a circle

    Correct Answer
    (pi)r^2
    Explanation
    The formula to calculate the area of a circle is given by (pi)r^2, where r represents the radius of the circle. This formula is derived from the fact that the area of a circle is equal to the product of pi (approximately 3.14159) and the square of its radius. Therefore, the correct answer is (pi)r^2.

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  • 8. 

    Perimeter of a rectanglearea of a squaresurface area of a rectangular prismsurface area of a cylinder             don't forget: pi = (pi) , ^ = exponent as in 2^2 and fractions are 1/2

  • 9. 

    Volume of a prismvolume of a cylinderPythagorean theorem simple interest

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  • Dec 02, 2024
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  • Apr 14, 2010
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