Answer:
2.514285714
Explanation:
formula for finding the area of a trapezoid is 1/2 (a+b) x h
a and b stand for the two bases
h stands for the height
79.2 cm = 1/2(48 + 15) x h(which is unknown)
79.2 cm² = 1/2(63) x h
79.2 cm² = 31.5(h)
you multiply both sides of the equal sign by 1/31.5
1/31.5 x 79.2cm² = 31.5(h) x 1/31.5
1/31.5 x 31.5 = 1 which is constant
1/31.5 x 79.2cm² = h
2.514285714 cm = h
the height of the trapezoid is 2.514285714cm