The Total Surface Area for the shape below is _.

The total surface area of the shape is 215.8 in²

Explanation:

The shape can be divided into two parts

Area of rectangle 1 = 12 X 6

                                = 72 in²

Area of rectangle 2 = 8 X 6

                                = 48 in²

Area of rectangle 3 = 6 X 7

                                 = 42 in²

Area of scalene triangle =

a = 7 in

b = 8 in

c = 12 in

Area of 2 scalene triangle = 26.9 X 2 in²

                                           = 53.8 in²

Total surface area  = 72 + 48 + 42 + 53.8 in²

                               = 215.8 in²

Therefore, total surface area of the shape is 215.8 in²

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.