HELP PLEASE WILL MARK AS BRANILY
Answers
Answer:
Step-by-step explanation:
5*7=35 feet²
1/2*4*3=6 feet² this surface is at two sides so multiply by2=12feet
3*7=21 feet²
so total surface area is 35+12+21=68feet²
Step-by-step explanation:
This prisom contains various shapes like 2 right angled traingle of same dimensions & 3 rectangle of diffrent dimensions
area of right angled traingle = 1/2*base*height
= 1/2*4*3
= 1/2* 12
= 6 feet^2
there are 2 right angled traingle of same dimensions
Area of 2 right angled traingle=6 * 2 = 12feet^2
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Dimensions of base rectangle,length=7feet
bredth= 4feet
area of base rectangle = length * bredth
= 7*4
= 28feet^2
Dimensions of lateral rectangle,length=7 feet
bredth= 3 feet
area of lateral rectangle = length * bredth
= 7*3
= 21 feet^2
Dimensions of inclined rectangle,length=7 feet
bredth= 5 feet
area of inclined rectangle = length * bredth
= 7*5
= 35 feet^2
area of three rectangle = 28+21+35= 84feet^2
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Area of prisom= area of two right angle triangle
Area of prisom= area of two right angle triangle + area of three rectangle
= 12 + 84
= 96 feet ^2