Question

20. Find the area of each of these figures : 7 m 7 m 7 m 3 m 6 m om -12 cm 3 cm 6 cm (a) 6 m (b) 5 cm 6 cm 3 cm 5 cm 1 cm 1 cm (c) 1 cm (d) 1.5 cm 1 cm - 2 cm H 1 cm 4 cm 1 cm 1 cm​

Answer 1

Answer:

a) 57 sqm

b) the question is not fully visible can you send it again.

c) 20sqcm

d) 22sqcm

Step-by-step explanation:

a) 6+6+3+3+7+7+7+(adding seven three times to get the mesure) 21=57sqm

c) 5+(adding 1 five times to get the mesure) 5+1+1+1+1+1+1+1+1+1+1=20sqcm

d) 1+1+1+1+4+4+2+2+(1.5×4) 6=22sqcm

Answer 2

Answer:

a)105 m²

b)84 cm²

c)15 cm²

d)10 cm²

Step-by-step explanation:

a)

Area of full figure =l×b

=6m×(7+7+7)m=(6×21)m

=126m²

Area of un filled figure=7×3=21m²

so,(126-21)m²

=105m²

b)

Area of rectangle A=6×3=18cm²

Area of rectangle B=6×(5+3)=48cm²

Area of rectangle C=6×3=18 cm²

Sum of Area of all rectangles =(18+48+18)cm²=84cm²

c)

Area of rectangle A=5×1=5cm²

Area of rectangle B=4×1=4cm²

Area of rectangle C=3×1=3cm²

Area of rectangle D=2×1=2cm²

Area of square E=1×1=1cm²

Sum of all Area =(5+4+3+2+1)cm²=15cm²

d)

Area of full figure=4×(1+2+1)=16cm²

Area of unfilled part=1.5×2=3cm²

Area of both unfilled part=3×2=6cm²

So,(16-6)cm²

=10 cm²