Answer:
Perimeter is 44cm
Area is 96cm²
Step-by-step explanation:
Perimeter=side+ side+side.....
●To find the missing horizontal side use the sides they give you :.the horizontal side will be 12-4 =8
●Do the same to find the missing vertical side:
10-7=3
:. Perimeter= 4+10+12+7+8+3
=44
(If you were to skip steps you could've also just seen it as 10+12+10+12=44)
To find area break the shape into manageable shapes you know the area formula of, like 2 rectangles. To help visualize it draw a line separating down from the 3cm vertical side we just calculated.
Area of rectangle 1 = length x breadth
=4×10
=40 units²
Area of rectangle 2 =length x breadth
=7×8
=56 units²
Therefore total area= rectangle 1 + rectangle 2
= 40 units²+ 56 units²
= 96 units²
Tip...to help when calculating do'nt be afraid to draw on the diagram and fill in the numbers you calculated previously to prevent confusion.
