2D Area Formulas Quizs

What does the "a" represent in a formula?

• Area

• Altitude

• Angle

• Acceleration

What is the area formula for a rectangle?

• A = lw, where l is the length and w is the width

• A = bh, where b is the base and h is the height

• A = 2(l + w), where l is the length and w is the width

• A = πr², where r is the radius of a circle

What is the area formula for a parallelogram?

• A = lw, where l is the length and w is the width.

• A = bh, where b is the base and h is the height.

• A = 1/2 bh, where b is the base and h is the height.

• A = b + h, where b is the base and h is the height.

What is the area formula for a triangle?

• A = @@rac{bh}{2}@@

• A = b + h

• A = b imes h

• A = @@rac{bh}{3}@@

What is the area formula for a circle?

• A = @@rac{1}{2} imes b imes h@@

• A = @@rac{4}{3} imes rac{1}{r}@@

• A = @@rac{1}{2} imes ext{base} imes ext{height}@@

• A = @@ ext{π} r^2@@

What is the area formula for a trapezoid?

• A = @@rac{ ext{b1+b2}}{ ext{2}}h@@

• A = @@b imes h@@

• A = @@rac{1}{2} imes (b1 + b2) imes h@@

• A = @@b1 imes b2 imes h@@

How do you calculate the area of a circle if you know the diameter?

• First, divide the diameter by 2 to get the radius, then use A = π(r²).

• Multiply the diameter by π to get the area.

• Use the formula A = π(d²/4) directly.

• Subtract the diameter from the radius and then square it.