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(6 * 30) + (15 * 42) = 180 + 630 = 810.
30 5 x 6 = 30
first use 5*6=30 then add 6*1=6 the product of 6*6 is 36
Use the sine ratio: sine 30 = opposite/12 opposite = 12*sine 30 opposite = 6 inches
The product is 30