Simply, if you know the height of the triangle, that is the length from an angle to an opposite base, a line that is an altitude of the triangle, then you could find the area using the simple formula for area of any triangle, which is 0.5(base*height) * being multiply of course.
A diagram:
^
/|\
/ | \
/ | \
/ |h \
/__|__\
b
That bottom line labeled 'b' is base and that altitude labeled 'h' is height.
If the height is not readily available, then the alternative formula just for equilateral triangles is (assuming that s is the length of one side)
[s2*squareroot(3)]/4
or in English
parentheses side squared times the square root of 3, end parentheses over 4.
You can't.
It can be divided into 5 equal triangles so find the area of a triangle and then times it by 5. Area of a triangle is 0.5 times base times perpendicular height.
If a is the side,lateral surface area of cube=4a2
Uisng the lateral area and tha radius, you should be able to find the height of the cone. Using the height and radius as the legs of a right triangle, use the Pythagorean Theorem. The hypotenuse is the slant height.
intracoastal waterway
You can't.
only solids have "lateral area". triangles have "area". the area of a scalene triangle is given by heron's formula. height not needed.
The area A is equal to 2πrh, where r is the radius and h is the height.
Use the formula 1/2bh to find the area of a triangle side. Then multiply that by 6 because you have 6 sides on the base.
It can be divided into 5 equal triangles so find the area of a triangle and then times it by 5. Area of a triangle is 0.5 times base times perpendicular height.
Knowing the slant height helps because it represents the height of the triangle that makes up each lateral face. So, the slant height helps you to find the surface area of each lateral face.
To find the lateral area of a cylinder, multiply the circumference (πd) by the height (πdh). After you have this, you can find the total surface area by adding twice the area of the base (2πr2).(Lateral area = πdh), (Surface area = πdh + 2πr2).
If a is the side,lateral surface area of cube=4a2
ABC is an equilateral triangle with side length equal to 50 cm. BH is perpendicular to AC. MN is parallel to AC. Find the area of triangle BMN if the length of MN is equal to 12 cm.
ABC is an equilateral triangle with side length equal to 50 cm. BH is perpendicular to AC. MN is parallel to AC. Find the area of triangle BMN if the length of MN is equal to 12 cm.
Uisng the lateral area and tha radius, you should be able to find the height of the cone. Using the height and radius as the legs of a right triangle, use the Pythagorean Theorem. The hypotenuse is the slant height.
intracoastal waterway