Isolating a variable in the formula - math word problems - last page

Number of problems found: 927

Right Δ
A right triangle has one leg 75 cm in length and the hypotenuse 85 cm in size. Calculate the triangle's height.
Square 2
Points D[10,-8] and B[1,-10] are opposed vertices of the square ABCD. Calculate the area of the square ABCD.
Cone A2V
The cone's surface in the plane is a circular arc with a central angle of 126° and an area of 415 cm². Calculate the volume of a cone.
Chord
In a circle with a radius r=60 cm is the chord, 4× longer than its distance from the center. What is the length of the chord?

Heron backlaw
Calculate the unknown side in a triangle with sides 39 and 38 and area 438.6.
Demographics
The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase in population?
Right triangle
The legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle.

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