Geometry Answers

prove Heron's formula

prove Heron's formula for area of a triangle whose sides are given a,b,c

Mai traveled 2 and a half at an average rate of 60 mph. How many miles did she go?

_.a__.b__.C is ab=6 ans bc =14 what is ac

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235m below?
Part (a) asks:
If the plane is traveling horizontally with a speed of 61.1m/s, how far in advance of the recipients (horizontal distance) must the goods be dropped?
I got 423m, which is the correct answer.

Part (b) asks:
Suppose, instead, that the plane releases the supplies a horizontal distance of 425m in advance of the mountain climbers. What vertical velocity (up or down) should the supplies be given so that they arrive precisely at the climbers' position?

if lenght of a rectangular is 5 times its width and its area is 180 m2 .find its perimeter?

What is the geometric mean of 7 and 12?
A.) 1 5/7
B.) 9.5
C.) 2√21
D.) 4√21

If mFEG=110, what is mFGJ?

In the diagram, JK:KL is 3:2 and JL = 35. Find JK and KL

what is the area of pentagon ABCDE with vertices A(-5, 6), B(1, -7), C(6, 0), D(1, 3), E(1, 6)