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QUESTION

# Area and perimeter of square, rectangle, triangle and circle.Find area and perimeter of square with side a=6.Find area and perimeter of square if diagonal d=5.Find area and perimeter of rectangle with

Area and perimeter of square, rectangle, triangle and circle.

1. Find area and perimeter of square with side a=6.
2. Find area and perimeter of square if diagonal d=5.
3. Find area and perimeter of rectangle with sides a=11 and b=7.
4. Find area of rectangle if one side is 8 , and perimeter is 26.
5. Find area of triangle if one side is 20 and height from that side is 12.
6. Find area of right triangle if sides (that make right angle) are a=6, b=3.
7. Find area and perimeter of right triangle if side a=15 and hypotenuse c=17.
8. If we have equilateral triangle (3 same size sides) and a=6.5 calculate area and perimeter.
9. If perimeter of equilateral triangle is  6 , find area.
10. If diameter of circle is d=100 find area and perimeter.
11. If area of circle is 30, find diameter, radius and perimeter.
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ANSWER

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****** ****** with **** a=6Area ** ****** ** ***** ** ******* ******* ************* ****** have * ***** ********* ***** P=4*6 *********** Diagonal d=5 *** ** have ******* or ******** *************************************** for calculating **** ** ****** ** ******** ** ******************** * **** ******* *** d)a=5/squreroot(2)a=5/141a=355So ** haveA=355^2=126Perimeter:P=4*a=4*355P=142Third) Rectangle **** ***** a=11 *** ******* **** ** ******** ** *** ********* ** given ** A=a*bSo ******************* ** P=2*a+2*b ***** ***** *** * ***** ** ******* ************************** *************** ********* ************ ****** **** ******* ********************************************************* ** **** * *** b **** ******************** ** have **** *** h=12And formula ** ************************** Right ******** ***** a=6 ****** ** have that * *** b **** ***** ***** ** b ** ****** for aFormula *** **** ** ******** ** ************************************ of **** ******** is * **** * ****** P=a+b+cwe **** **** c ***** *********** ******* will ****************** ********************************************* **************************************** ***** ************* **** ********** ****** **** * and b *** **** ************************************************************************************ we *** find area *** ******************************* *************************** *********** ********* ***** ************ ********* *** easy:P=3*aP=3*65P=195Area ****** ** * formula A=(a^2*sqrt(3))/4A=(65^2*173)/4A=4225*173/4A=731/4A=1827Ninth) *********** triangle perimeter *********** ******** 6=3*aa=2Area ** A=(a^2*sqrt(3))/4A=(4*173)/4A=173Tenth) Circle: formulas:A= r^2* ****** ** ***** πDiameter ***** ** perimeter **** π **************** we ******************************** ************************************* We have ****** with area A=30d=?r=?P=?Its easy:A=r^2* **** ****** ***** r=sqrroot(A/ ** *** π ******************************* have radius **** *** ********** easy to find:d=2*r=2*31d=62Perimetrer ************** ****************

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