Quiz of Formula

Which of the following formula can find the area of a trapezium?

• (upper base + lower base) x height ÷ 2

• base x height ÷ 2

• base x height

• (upper base + lower base) x height

base x height = ?

• area of triangle

• area of parallelogram

• area of trapezium

• area of rectangle

length x width = ?

• area of rectangle

• perimeter of rectangle

• area of parallelogram

• perimeter of parallelogram

Which of the following formula can find the length of a rectangle?

• (length + width) x 2

• perimeter ÷ 2 - width

• perimeter ÷ width

• (perimeter - width - width ) ÷ 2

Which of the following formula can find the perimeter of a circle?

• $2\pi r$

• $d\pi$

• $\pi r^2$

• $\pi r$

 $circumference\ \div\pi$  = ?

• diameter of a circle

• radius of a circle

• perimeter of a circle

• revolution of a circle

Discount = ?

• Marked price x Discount %

• Marked price - Selling price

• $\frac{marked\ price\ -\ selling\ price}{marked\ price}\ \times100\%$

• Marked price x (1-Discount %)

Discount % = ?

• $\frac{Discount}{Marked\ price}\times100\%$

• $\frac{Marked\ price\ -\ Selling\ price}{Marked\ price}\times100\%$

• Marked price - Selling price

• $1-\frac{Selling\ price}{Marked\ price}\times100\%$

Marked price x (1-Discount%) = ?

• Selling price

• Original price

• Discount

• Amount of money saved