Area/Perimeter of Shapes

What is the formula for the circumference of a circle?

• @@C = rac{d}{2} imes rac{22}{7}@@

• @@C = rac{1}{2} imes rac{d}{rac{22}{7}}@@

• @@C = 2 heta r@@

• @@C = 2 ext{π}r@@

What is the formula for the area of a trapezoid?

• @@A = rac{(b_1 + b_2)h}{2}@@

• @@A = b_1 imes h@@

• @@A = rac{b_1 + b_2}{2} imes h@@

• @@A = b_1 + b_2 + h@@

What is the significance of units in area and perimeter?

• Area is expressed in linear units (e.g., meters), while perimeter is expressed in square units (e.g., square meters).

• Area is expressed in square units (e.g., square meters), while perimeter is expressed in linear units (e.g., meters).

• Both area and perimeter are expressed in square units.

• Units are not significant in area and perimeter measurements.

What is the formula for the area of a parallelogram?

• @@A = bh@@

• @@A = rac{1}{2}bh@@

• @@A = b + h@@

• @@A = b imes h^2@@

What is the formula for the area of a regular polygon?

• @@A = rac{1}{4}n s^2 anigg(rac{ heta}{2}igg)@@

• @@A = rac{1}{2}n s^2 anigg(rac{ heta}{2}igg)@@

• @@A = rac{1}{4}n s^2 anigg(rac{ heta}{n}igg)@@

• @@A = rac{1}{4}n s^2 ext{cot}igg(rac{ ext{π}}{n}igg)@@

What is the formula for the perimeter of a parallelogram?

• P = 2(a + b)

• P = a + b

• P = 2ab

• P = 2(a - b)

What is the formula for the area of a rectangle?

• @@A = l + w@@

• @@A = l - w@@

• @@A = l imes w@@

• @@A = 2(l + w)@@

What is the formula for the perimeter of a rectangle?

• @@P = 2(l + w)@@

• @@P = l + w@@

• @@P = 2l + 2w@@

• @@P = lw@@

What is the formula for the perimeter of a triangle?

• P = a + b + c

• P = 2(a + b)

• P = a^2 + b^2 + c^2

• P = 3a

What is the formula for the area of a rhombus?

• A = \frac{d_1 d_2}{2}

• A = d_1 + d_2

• A = d_1 \times d_2

• A = \frac{1}{2}(d_1 + d_2)