15. A parallelogram has a height of 3.5 feet and a base measurement of 12 feet. What is the area of a triangle that has the same height and base measurement?
A. 42 ft2
B. 28 ft2
C. 21 ft?
D. 15.5 ft?

Please help me

answer:

ok mathematics is simple. ratios and proportions - proportions - in depth. a proportion is simply a statement that two ratios are equal. it can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a: b = c: d. the following proportion is read as "twenty is to twenty-five as four is to five."

step-by-step explanation: