+36 1.) Using the approximation 3.14 for (pie) what is the radius of a circle with circumference 18.8 m The radius is__m. (Round to nearest tenth as needed) 2.) What is the length of a rectangle with width 16 in. and area 104 in.^2? The length is__in. (Simplify your answer. Type an integer or a decimal.) 3.) A rectangle has perimeter 86 cm and length 34 cm. What is it's width? The width is__cm. 4.) Solve or r. A=1/3(pie)t^2r (Use integers or fractions for any numbers in the expression. Simplify your answer .r=__ 4.) Solve the equation for he given variable. B=(q+z/3)f for q q=__ 5.) certain clouds form when the temperatures fall below -74C. What is the temperature in the degrees Fahrenheit?
+128578 1) Using C = 2*pi*r we have
18.8 = 2*3.14*r
18.8 = 6.28*r Divide both sides by 6.28
18.8/6.28 = r = 2.99 = 3
+128578 2) A = L * W
104 = L*16 Divide both sides by 16
104/16 = L = 26/4 = 13/2 = 6.5 in
+128578 3) Using P = 2(W + L) we have
86 =2(W + 34) Divide both sides by 2
43 = W + 34 Subtract 34 from both sides
9 =W = 9cm
+128578 4) I assume this is A = (1/3)*pi*(t^2)*r .... using 3.14 for "pi"...we have
Just divide both sides by (1/3)*3.14*(t^2)
So we get
A / [ (1/3)*3.14*(t^2)] = r
3A/ [3.14*(t^2)] = r ≈ .955A / t^2
