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Find the measure of each interior angle of a regular 45-gon?
8100
How many square feet is 90 ft x 90 ft?
To find the area of a square, you multiply the length by the width. In this case, 90 ft x 90 ft equals 8100 square feet. This is because each side of the square is 90 feet long, so the total area covered by the square is 8100 square feet.
How do you estimate front end digits?
Front end estimation generally produces a better estimate of sums or differences than rounding before adding or subtracting. How to Estimate a sum by front end estimation * Add the digits of the two highest place values * Insert zeros for the other place values * Example 1: 4496 + 3745 is estimated to be 8100 by front end estimation (i.e. 4400 + 3700). * Example 2: 4496 + 745 is estimated to be 5100 by front end estimation (i.e. 4400 + 700).
What is the area of 9 inch diameter circle?
Area= pi × radius2 Area= 3.14 × (4.5 in2) Area= 3.14 × 20.25 Area= 63.585 in2 The answer is 63.585. You would find this answer by doing this: 20.25 x3.14 _______ 8100 20250 +607500 _______ 635850 Then you would take the zero off the end.
