Rounding + area - practice problems
Number of problems found: 92
- Area of a circle
The circumference of the circle is 150.72 centimeters. Calculate the area of the circle. - Circumference 48533
The diameter of the circle is 6.8 cm. Calculate the area of the circle to 1 decimal place. Calculate the circumference of the circle to 1 decimal place. - Garden
How many steps of 76 cm circumvent square garden with area 1.8 ha? - Calculate 6930
Calculate the diameter of a circle whose area S = 78.5 cm². - Father and son
Father and son are 74 years old together. Son is 30 years younger than father. How old is the son? - The surface
The surface of the cylinder is 1570 cm²; its height is 15 cm. Find the volume and radius of the base. - A screen
A screen is 1680 x 1050 pixels. What are the coordinates (and size in pixels) of a central area which is exactly 33% of the screen size? - Sphere radius
The surface of the sphere is 60 cm square. Calculate its radius; result round to tenth of cm. - Calculate 45931
Calculate the area of a circle with a radius of 72.9 cm. Specify it in cm2, and enter only a numeric value in response. - Circular 36163
The circular park has an area of 31400 m². A trail runs across the center of the park. How long is it? - The crane
The construction crane has a 20m long arm. What construction area in ares can it handle from this crane if it rotates around its axis? - Tiles
The rectangular floor of the 6 x 1.8 m dimensions is to be covered with 50 cm square tiles. How many tiles will be needed? - Calculate 8325
Calculate the area of a circular section given by an angle of 220 degrees if the circle's radius is 20cm. Round the result to cm2 - Ray
Light ray loses 1/14 of brightness passing through a glass plate. What is the brightness of the ray after passing through 10 identical plates? - Everyone 13843
The orchard measures 24.6 meters x 70 meters. How many trees can we plant in it if everyone needs at least 12 square meters? - Rotating cone II
Calculate the area of the surface of a rotating cone with base radius r=15 cm and height h=13 cm. - Trapezoid
Calculate the area of trapezoid ABCD with sides |AB|= 82 cm, |BC|=60 cm, |CD|=19 cm, |AD|=39 cm.. - Rectangular 20023
The land has a rectangular shape with 75 m and 450 dm dimensions. Calculate the acreage of the land and convert the result, and round to whole ares. - Cylinder-shaped 18283
How much fabric will be needed to cover a cylinder-shaped seat with a diameter of 0.8 m, 0.6 m high (rounded up to whole square meters) - Jodi is
Jodi is cutting out pieces of paper that measure 8 1/2 inches by 11 inches from a larger sheet of paper that has an area of 1,000 square inches. What is the area of each piece of paper that Jodi is cutting out?
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