Given: abcd ∥gram, bk ⊥ ad , ab ⊥ bd ab=6, ak=3 find: m∠a, bk, aabcd

1. Consider right triangle ABK. The hypotenuse AB is 6 un. and the leg AK is 3 un. Since the leg is half of the hypotenuse, then the opposite to the leg angle is 30°. This means that m∠ABK=30°. Then m∠BAK=90°-30°=60°.

2. By the Pythagorean theorem,

3. Consider right triangle ABD. In this triangle AD is hypotenuse and m∠ADB=90°-m∠BAD=90°-60°=30°. Then the leg AB opposite to the angle 30° is half of the hypotenuse and AD=12 un.

4. The area of parallelogram is

Hi 0101sj,

Your Question:

Avril types essays for students from her home. On average, she can type a page in about 10 2/3 minutes. she spends 54 1/2 minutes typing on essay, how many pages if this essay?

1 PAGE = 10 2/3 = 10.20

Essay = 54 1/2 = 54.50

54.50 / 10.20 = 5.34313...

She approximately wrote 5 pages.