Area

Area 1

100

The area of the triangle: base = 100.8 ft and height = 96.3 ft

A=4,853.52 ft²

200

The area of the rhombus where the diagonal 1 = 12.1 m and diagonal 2 = 6.4 m

A = 38.72 m²

300

The area of a regular nonagon where side length = 8.7 in and apothem = 1 foot.

A = 469.8 in²

400

Estimate the area of RD - H

A = 32 units²

500

The area of a pentagon where the apothem = 10 mm.

A = 365 mm²

Area 2

100

The area of a circle with a diameter of 2 and two-fifths yards.

A = 4.52 yards²

200

The area of a kite where height  = 4.3 cm, diagonal 1 = 7.4 cm, and diagonal 2 = 5.22 cm.

A = 19.31 cm²

300

The area of the trapezoid where base 1 = 1 ft, base 2 = 0.5 ft, height = 0.3 ft

.225 ft squared

400

The area of the triangle on RD-C

A = 15 units²

500

Without any help(formula sheet, phone, etc), name 5 different area formulas.

A=bh, A=bh/2, A=h(b1+b2)/2, A=d1*d2/2, A=san/2, A=pi*r^2

Composite Shape

100

The area of the shaded section in RD-E

A = 25.5 units²

200

The area of the figure in RD-D.

A = 90.5 m²

300

The area of the figure in RD-A.

A = 112.5 units²

400

The area of the figure in RD-G.

A = 20.28 cm²

500

The area of the figure in RD-B.

A = 13.42 ft²

Change in Dimensions

100

Draw a parallelogram with a base of 4 and a height of 3. Suppose the base of the parallelogram was quadrupled(4 times). What effect would this have on the area?

Area is 4 times bigger.

200

Draw a parallelogram with a base of 4 and a height of 3. Suppose the base and the height of the parallelogram was quadrupled(4 times). What effect would this have on the perimeter?

The perimeter is 4 times bigger.

300

Draw a parallelogram with a base of 4 and a height of 3. Suppose the base was tripled and the height was quadrupled(4 times). What effect would this have on the area?

Area is 12 times bigger.

400

Draw a circle with a radius of 20 cm. Suppose the radius of the circle was halved. What effect would this have on the circumference?

The circumference would be 1/2 as big.

500

Draw a circle with a radius of 20 cm. Suppose the radius of the circle was halved. What effect would this have on the area?

Area would be 1/4 as big.

Missing dimensions

100

The missing dimension of a parallelogram: Area = 96 yards² and height = 8 yards

b = 12 yards

200

The missing dimension of a triangle: Area = 40x²y m² and base = 8x m.

height = 10x m

300

The missing dimension of a trapezoid: Area = 21 yards²_, b₁ = 2 yards and height = 5 yards

b₂ = 6.4 yards

400

The missing dimension of a trapezoid: Area = 24x² cm², height = 4x cm, and b₁ = 5x cm

b₂ = 7x cm

500

The missing dimension of a regular dodecagon: Area = 540 mm² and side length = 10 mm.

a = 9 mm