Class 8 Maths: Mensuration Chapter
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Questions and Answers

What is the formula for the area of a rectangle with length $l$ and breadth $b$?

  • $l + b
  • $2(l + b)
  • $1/2 \times l \times b
  • $l \times b (correct)

    • What is the formula for the area of a triangle with base $b$ and height $h$?

  • $b^2 + h^2
  • $1/2 \times b \times h (correct)
  • $b + h
  • $b \times h

    • What is the formula for the perimeter of a circle with radius $r$?

  • $2 \times \pi \times r (correct)
  • $\pi \times r^2
  • $r + \pi + r
  • $4 \times r

    • What is the formula for the area of a parallelogram with base $b$ and height $h$?

    <p>$b \times h</p> Signup and view all the answers

    What is the formula to calculate the total surface area of a cuboid?

    <p>$2(lb + bh + hl)$</p> Signup and view all the answers

    How can we calculate the lateral surface area of a cuboid?

    <p>$2(l + b)h$</p> Signup and view all the answers

    What is the formula to calculate the total surface area of a cube?

    <p>$6a^2$</p> Signup and view all the answers

    What is the formula to calculate the curved surface area of a cylinder?

    <p>$2 extbackslash pi rh$</p> Signup and view all the answers

    What is the formula to calculate the total surface area of a cylinder?

    <p>$2 extbackslash pi rh + 2 extbackslash pi r^2$</p> Signup and view all the answers

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