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find the area of each figure
13.5m 18m 9 m​


Sagot :

Answer:

1) A. Area of triangle

= b x h / 2

= 13.5 m x 9 m / 2

= 121.5 m² / 2

= 60.75 m²

B. Area of rectangle

= l x w

= 18 m x 13.5 m

= 243 m²

Area of the figure

= area of the triangle + area of the rectangle

= 60.75 m² + 243 m²

= 303.75

2) A. Area of triangle

= b x h / 2

= 4 m x 4 m / 2

= 16 m² / 2

= 8 m²

B. Area of trapezoid

= base 1 + base 2 / 2

= 4 m + 4 m / 2

= 8 m² / 2

= 2 m²

Figure of the Area

= Area of the triangle + area of the trapezoid

= 8 m² + 2 m²

= 10 m²

3). A. Area of square

= l x w

= 6 cm x 6 cm

= 36 cm²

B. Area of triangle

= b x h / 2

=6 cm x 3 cm / 2

= 18 cm² / 2

= 9 cm²

Figure of the Area

= Area of the square + Area of the triangle

= 36 cm² + 9 cm²

= 45 cm²

4) Area of trapezoid

= Base 1 + base 2 x height / 2

= 15 cm + 18 cm x 18 cm ÷ 2

= 33 cm² x 18 cm ÷ 2

= 594 cm² ÷ 2

= 297 cm²

5) A. Area of square

= l x w

= 42 cm x 42

= 1764 cm²

B. Area of rectangle

= L x w

= 42 cm x 70 cm

= 2940 cm²

Figure of the Area

= Area of the square + Area of the rectangle

= 1764 cm² + 2940 cm²

= 4704 cm²