Formulas
The formula to find the area of a triangle
What is A = 1/2bh?
The area of a circle with a radius of 5 feet
What is 78.5 ft2?
The circumference of a circle with a radius of 1.6 ft
What is 10.05 ft2?
The area of a trapezoid with bases 7.5 in and 10.5 in and a height of 7 in
What is 63 in2?
A piece of sod for a lawn is in the shape of a square with a length of 12 inches. What is the area of the piece of sod?
What is 144 square inches?
What is A = bh?
The circumference of a circle with a diameter of 6.3 in
What is 19.78 in?
The area of a circle with a diameter of 8.5 in
What is 56.72 in2?
The area of a triangle with a height of 9 yd and a base of 7 yd
What is 31.5 yd2?
The perimeter of the figure on the board
What is 56 ft?
The formula for circumference of a circle
What is C = πd or C = 2πr?
A Susan B. Anthony dollar coin has a diameter of 26.50 millimeters. What is the area of the coin?
What is 551.27 mm2?
What is the area of a circle with a radius of 11 centimeters?
What is 379.94 square centimeters.
A flower bed is shaped like a trapezoid with a height of 3.5 yards, one 2.8-yard base, and another 4.6-yard base. A packet of flower seeds covers 5.6 square yards. What is the least number of packets needed to plant the flower bed?
What is 3 packets?
The area of a square is 121 cm2. What is the perimeter of the square?
What is 44 cm?
The formula for area of a circle
What is A = πr2?
A tablecloth for a round table has a radius of 21 inches. What is the area of the tablecloth?
What is 1,384.74 square inches?
A round stained-glass window has a circumference of 195 inches. What is the radius of the window to the nearest inch?
What is 31 inches?
The area of a square is 625 cm2. What is the perimeter of the square?
What is 100 cm?
A figure is made of a square and a semi-circle. The square has sides of 16 cm each. One side of the square is also the diameter of the semi-circle. What is the total area of the figure?
What is 356.48 cm2?
The formula for area of a trapezoid
What is A = 1/2h(b1 + b2)?
A welcome mat on the front porch is a semicircle. The straight side of the mat is 36 inches. What is the perimeter of the mat?
What is 92.52 in?
There is a water reservoir beneath a circular garden to supply a fountain in the garden. The reservoir has a 26-inch diameter. The garden has a 12-foot diameter. How much of the garden does not contain the water reservoir?
What is 15,747.1 in2?
The area of the non-shaded part of the circle on the board
What is 37.68 cm2?
Bob has a flower garden that is 20 yd wide and 25 yd long. One bag of fertilizer can cover 4 yd2. How many bags will he need to cover the whole garden?
What is 125 bags?