an article marked at rs.8000 is sold at rs.6689.60 allowing a some discount and then adding vat. if the rate of discount was double than rate of vat . find the selling price of the article without vat.

well your weight will go up if you are not going to burn the calories/ carbs

step-by-step explanation:

the answer is:

the lateral area is equal to

to find the lateral area of the square pyramid, first we need to find the perimeter of the base, and then, find the lateral area using the following formulas:

where,

s, is the base length

slant height, is the height of a the side of the pyramid

we are given:

now, calculating the perimeter of the base, we have:

then, calculating the lateral area:

hence, we have that the lateral area is equal to

have a nice day!

11) obtuse

13)right

15) acute