3. I got 104 as my answer
The Johnsons framed a family picture to hang on the wall. The perimeter of the frame is 42 inches. Use the formula P = 2ℓ + 2w to find the length of the frame if the width is 10 inches.

A. 10 in.

B. 8 in.

C. 9 in.

D. 11 in.

D. 11 in.

Step-by-step explanation:

p=2l+2w

42=2l+2 (10)

42=2l+20

-20 -20

22=2L

22/2 = 11

length = 11 inches

Your answer would be 104 if you do the math right

Step-by-step explanation:

2*42=84

2*10=20

84+20=104

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2