1 / 25

Find the area of a rectangle with l = 36 cm and w = 9 cm .

Find the area of a rectangle with l = 36 cm and w = 9 cm. A = lw. 324 cm 2. Find the area of a triangle with b = 23 cm and h = 14 cm. A = ½ bh. 161 cm 2. Find the area of a circle with r = 12 cm. A = p r 2. 452.2 cm 2. Find the missing measure. A = ?. 10.

kaspar
Download Presentation

Find the area of a rectangle with l = 36 cm and w = 9 cm .

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Find the area of a rectangle with l = 36 cm and w = 9 cm. A = lw 324 cm2

  2. Find the area of a triangle with b= 23 cm and h= 14 cm. A = ½bh 161 cm2

  3. Find the area of a circle with r= 12 cm. A = pr2 452.2 cm2

  4. Find the missing measure. A = ? 10 A = 2pr2 + s2 10 = 2p(52) + 102 = 50p + 100 ≈ 257 units2

  5. 12 12 A = (b1 + b2)h − bh = (11 + 17)(6) − 3(8) Find the missing measure. A = ? 9 3 11 = 84 − 24 8 3 = 60 units2

  6. Find the area of the colored region. 2 cm A = bh + bh A = 24 + 8 4 cm 8 cm = 32 cm2 3 cm

  7. 7 cm 5 cm 7 cm 5 cm Find the area of the colored region. A = s2 − s2 A = 72 − 52 = 24 cm2

  8. 12 12 A = bh − bh = 11(8) − (11)(4) 11 cm 8 cm 4 cm Find the area of the colored region. = 88 − 22 = 66 cm2

  9. 12 12 A = (b1 + b2)h − bh = (10 + 13)(6) −(9)2 10 m 2 m 9 m 6 m 13 m Find the area of the colored region. = 69 − 18 = 51 m2

  10. 4 m Find the area of the colored region. A = s2 − pr2 = 82 − p(42) = 64 − 16p ≈13.8 m2

  11. 34p2 23 = A C p = 34 B X Z p = ? Y Using the similar triangles, find the perimeter of ∆XYZ. 3 2p2 = 34(3) 2 2p2 = 102 p2 = 51 units

  12. 2 A136 ( ) 23 = X 3 Z A136 A = 36 Y 49 = A 2 C A = ? B Using the similar triangles, find the area of ∆ABC. 9A1 = 36(4) 9A1 = 144 A1= 16 units2

  13. At Fermilab in Batavia, Illinois, nuclear particles are accelerated around a circle that is 2 km in diameter. Determine the number of acres within this circular ring if 1 km2 = 247 acres. Round to the nearest acre. 776 acres

  14. If the sides of polygon A are twice the length of the sides in a similar polygon B, what is the ratio of their perimeters? their areas? perimeter 2:1; area 4:1

  15. Find the surface area and volume. 2 cm 8 cm S = pH + 2B 5 cm = [2(8 + 5)](2) + 2[8(5)] = 26(2) + 2(40) = 52 + 80 = 132 cm2 V = BH = [8(5)](2) = 80 cm3

  16. 4 m 7 m Find the surface area and volume. S = 2prH + 2pr2 = 2p(4)(7) + 2p(42) = 56p + 32p = 88p ≈ 276.3 m2 V = pr2H ≈ 351.7 m3 = p(42)(7) = = 112p

  17. 8 mm 6 mm 10 mm Find the surface area and volume. The altitude of 8 and half the base of the triangular end form a right triangle with hypotenuse c.

  18. 12 8 mm 6 mm 10 mm c = 73 Find the surface area and volume. c2 = 82 + b2, where b = s = 3 c2 = 82 + 32 = 73

  19. 12 12 8 mm 6 mm 10 mm = (2 73+ 6)(10) + 2[ (6)(8)] = [ (6)(8)](10) Find the surface area and volume. S = pH + 2B ≈ 23.1(10) + 48 ≈ 279 mm2 V = BH = 240 mm3

  20. 5 cm 4 cm 13 13 12 12 6 cm S = pl + B 6 cm = [4(6)](5)+ 62 V = BH = (62)(4) Find the surface area and volume. = 60 + 36 = 96 cm2 = 48 cm3

  21. 12 mm 13 mm 5 mm Find the surface area and volume. S = prl + pr2 = p(5)(13)+ p(52) = 65p + 25p = 90p ≈ 282.6 mm2

  22. 13 13 12 mm V = pr2H 13 mm = p(52)(12) 5 mm Find the surface area and volume. = 100p ≈314 mm3

  23. What is the volume of a cereal box 12 in. tall, 8 in. wide, and 2 in. thick? 192 in.3

  24. Find the volume of a waffle cone that is 15 cm tall and has a radius of 4 cm. 80 cm3≈ 251.2 cm3

  25. Give the mathematical significance of Genesis 6:22.

More Related