Question

5. Find the area of a wall shown in Fig. 14.17.
15 m
60 m
- 100 m
Fig. 14.17
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Answer 1

Answer:

-13,200

Step-by-step explanation:

length= 15

breath = 60

hight = -100

Area of wall =2(lb+bh+hl)

= 2(15×60+60×(-100)+(-100)×15

= 2[900+(-6000)+(-1500)]

= 2[ -6,600 ]

= -13,200

Answer 2

Answer:

here is the answer of your question

solution:-

firstly we find the area of rectangular wall

so,as we know area of rectangle is= length×breadth

=60m×100m

= 6000m²

now, we find the area of the upper triangle so we know that the base is similar as the the breadth of rectangle so,area of triangle=1/2× base × height

=1/2×100m×15m

=750m²

now, we add both the areas

so, we get the whole area of wall

=6000m²+750m²

=6750m²