How is this question done?
1)Calculate, for a wall 15.3 m long and 1.640 m high (using correct significant figures)
(a) the area of the wall. (Show how you arrived at the answer.)
(b) the perimeter of the wall. (Show how you arrived at the answer.)
. 2)What is the sum of the following masses? 5.08 kg, 15.9 kg, 8.2 kg.

Question

How is this question done?
1)Calculate, for a wall 15.3 m long and 1.640 m high (using correct significant figures)
 (a) the area of the wall. (Show how you arrived at the answer.) 
(b) the perimeter of the wall. (Show how you arrived at the answer.) 
. 2)What is the sum of the following masses? 5.08 kg, 15.9 kg, 8.2 kg.

anonymous · Answer

It's a rectanlge

anonymous · Answer

area = L x W
perimeter = add all 4 sides

anonymous · Answer

ohh ok i willl use the formulas thanks