LA=1/2ps
LA=1/2ps
Lateral Area=Perimeter of the base * height perimeter=20 height=6 so, Lateral Area=20 * 6 Lateral Area=120cm
False
An isosceles trapezium.
Pyramid (regular) Lateral area : pl/2, where l = slant height : p = base perimeter Total area : pl/2+B where B = Base area.
LA=1/2ps
LA = 1/2psnewtest3
SA=BA+LA SA=BA+1/2ps
Lateral Area=Perimeter of the base * height perimeter=20 height=6 so, Lateral Area=20 * 6 Lateral Area=120cm
False
An isosceles trapezium.
Yes.
Pyramid (regular) Lateral area : pl/2, where l = slant height : p = base perimeter Total area : pl/2+B where B = Base area.
If it is a regular pyramid you need to find out the base perimeter, multiply it by the height of the sides (when considered as triangles) and divide by two. The height of the side can be found using Pythagoras's formula if you know the height of the pyramid and the length of a side. The side height of a pyramid is also known as the slanted height or L in a formula. Formula:permiter of base x L(side height) ( P of B)(L) p x L(slant) ----------------------------------------- = --------------------- 2 2 Good luck!
first tell me the formula
The volume of a regular pyramid is 1/3*area of the base*hight
The slant height doesn't help you get the answer. Apart from the perimeter, you would need SOME other information about the base; either the number of sides, or anything that can help you calculate the number of sides. For example, if the base is a regular pentagon, you divide the perimeter by 5, and then use the formula for a regular pentagon, to calculate the base.