Will give BRAINLIEST

38 (cm.)

Step-by-step explanation:

1) to calculate the values of 'x' and 'y' (see the picture):

x=10-3-3-2=2 cm.

y=3 cm.

2) to calculate the required perimeter:

10+3+3+6+3+3+2+3+2+3=38 cm.

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step-by-step explanation:

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!